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Leaving Cert Chemistry > Chapter 2: The Atom > Flashcards

Chapter 2: The Atom Flashcards

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1
Q

What is the specific name for materials?

A

-matter

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2
Q

What is matter?

A

-the specific name for materials

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3
Q

The idea that materials are made up of particles is often referred to as what?

A

-particulate nature of matter

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4
Q

What is particulate nature of matter?

A

-the idea that materials are made up of particles

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5
Q

What is the spreading of gases called?

A

-diffusion

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6
Q

What is diffusion?

A

-the spreading of gases

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7
Q

When can diffusion in a liquid be seen?

2

A
  • if a large crystal of copper sulphate is placed at the bottom of a large graduated cylinder filled with water
  • after a few hours the blue colour will have spread throughout the water
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8
Q

Who were the first to propose that matter was composed of small particles?

A

-Greek philosophers

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9
Q

Greek philosophers were the first to propose what?

A

-that matter was composed of small particles

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10
Q

Who was the most important of the Greek Philosophers who proposed matter was composed of small particles?

A

-Democritus

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11
Q

Who was Democritus?

A

-he was the most important of the Greek Philosophers who proposed matter was composed of small particles

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12
Q

What did the Greek philosophers believe?

A

-they believed that the tiny particles of which all matter was composed were so small that they could not be broken down into even smaller particles

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13
Q

Who believed that the tiny particles of which all matter was composed were so small that they could not be broken down into even smaller particles?

A

-Greek philosophers

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14
Q

Where does the word atom come from?

A

-the Greek word atomos meaning invisible

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15
Q

What word comes from the Greek atomos?

A

-atom

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16
Q

Who wrote a book in which he put forward an Atomic Theory to explain the results of a number of experiments he had performed with gases?

A

-John Dalton

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17
Q

What did John Dalton put forward in a book?

A

-an Atomic Theory

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18
Q

Why did John Dalton put forward an Atomic Theory?

A

-to explain the results of a number of experiments he had performed with gases

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19
Q

Who was John Dalton?

A

-he was an English chemist

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20
Q

Who was William Crookes?

A

-he was an English chemist

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21
Q

What experiment did William Crookes carry out?

A

-he carried out an experiment to investigate what happens when an electric current is passed through a glass tube containing air at low pressures

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22
Q

Who carried out an experiment to investigate what happens when an electric current is passed through a glass tube containing air at low pressures?

A

-William Crookes

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23
Q

What is contained in the glass tube during William Crookes’ experiment?

A

-air at low pressure

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24
Q

What contains the air at low pressure during William Crookes’ experiment?

A

-a glass tube

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25
Q

What is passed through the glass tube containing air at low pressures during William Crookes’ experiment?

A

-electric current

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26
Q

What is the electric current passed through during William Crookes’ experiment?

A

-a glass tube containing air at low pressures

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27
Q

What is the type of glass tube commonly called in William Crookes’ experiment in cathode rays called?

A

-vacuum tube

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28
Q

Who used a vacuum tube during their experiments?

A

-William Crookes

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29
Q

What is a vacuum tube?

A

-a type of glass tube

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30
Q

What did Crookes find was coming from the metal plate inside the tube connected to the negative end of the power supply?

A

-radiation

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31
Q

Where did Crookes find radiation was coming from during his experiment?

A

-the metal plate inside the tube connected to the negative end of the power supply

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32
Q

What was the metal plate inside the tube where Crookes found radiation was coming from connected to?

A

-the negative end of the power supply

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33
Q

What is the negative end of the power supply connected to in Crookes experiment?

A

-the metal plate inside the tube

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34
Q

How did Crookes show the existence of radiation?

A

-by placing a Maltese cross inside the tube

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35
Q

What did Crookes prove the existence of by placing a Maltese cross inside the tube?

A

-radiation

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36
Q

What type of cross did Crookes place inside the vacuum tube?

A

-a Maltese cross

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37
Q

Where did Crookes place the Maltese cross during his experiment?

A

-inside the vacuum tube

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38
Q

What did Crookes find happened after the Maltese cross was placed inside the vacuum tube of his experiment?

A

-he found that a shadow of the Maltese cross was formed at the other end of the tube

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39
Q

What shadow was formed at the other end of the vacuum tube of Crookes’ experiment?

A

-a shadow of the Maltese cross

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40
Q

Where was the shadow of the Maltese cross formed in Crookes’ experiment?

A

-at the other end of the tube

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41
Q

What name did Crookes use to describe the rays coming form the cathode?

A

-cathode rays

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42
Q

What did Crookes call cathode rays?

A

-the rays coming from the cathode in his experiment

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43
Q

What happens when cathode rays strike the glass of a vacuum tube?

A

-they cause the glass to glow or fluoresce

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44
Q

What is the shadow of the Maltese caused by?

A

-it is caused when the cathode rays are stopped by the Maltese cross

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45
Q

Why did Crookes carry out a second experiment?

A

-to investigate the properties of cathode rays

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46
Q

What did Crookes investigate the properties of during his second experiment?

A

-the properties of cathode rays

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47
Q

What did Crookes place on mounted rails, in front of the cathode during his second experiment?

A

-a light paddle wheel

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48
Q

Where did Crookes place the light paddle wheel during his second experiment?

A

-on mounted rails, in front of the cathode

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49
Q

What happened when the current was switched on during Crookes’ experiment?

A

-the paddle wheel rotated and travelled down the tube

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50
Q

When did the paddle wheel rotate and travel down the tube during Crookes’ second experiment?

A

-when the current was switched on

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51
Q

What did Crookes observe happened to the vanes in his second experiment?

A

-they always turned away from the cathode

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52
Q

What always turned away from the cathode in Crookes’ experiment?

A

-the vanes

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53
Q

What did Crookes’ conclude from the vanes always turning away from the cathode?

A

-he concluded that these vanes were being struck by particles coming from the cathode

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54
Q

What did the particles coming from the cathode strike in Crookes’ second experiment?

A

-the vanes

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55
Q

What were the properties of cathode rays that Crookes was able to deduce from his two experiments?
(3)

A
  • cathode rays travel in straight lines
  • cathode rays cause glass to fluoresce when they strike it
  • cathode rays possess enough energy to move a paddle wheel
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56
Q

In what way do cathode rays travel?

A

-in straight lines

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57
Q

What rays travel in straight lines?

A

-cathode rays

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58
Q

How did Crookes deduce that cathode rays travel in straight lines?

A

-since the shadow of the Maltese cross was sharp

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59
Q

What do cathode rays cause glass to do?

A

-fluoresce when they strike it

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60
Q

When does glass fluoresce?

A

-when cathode rays strike it

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61
Q

What do cathode rays possess enough energy to move?

A

-a paddle wheel

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62
Q

What rays possess enough energy to move a paddle wheel?

A

-cathode rays

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63
Q

Where was J.J Thomson working?

A

-Cavendish Laboratory at Cambridge University

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64
Q

What famous English scientist worked at Cavendish Laboratory at Cambridge University?

A

-J.J Thomson

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65
Q

What did J.J Thomson devise an experiment to investigate?

A

-if the cathode rays discovered by Crookes consisted of charged particles

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66
Q

Who devised an experiment to investigate if the cathode rays discovered by Crookes consisted of charged particles?

A

-J.J Thomson

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67
Q

How did J.J Thomson obtain a narrow beam of cathode rays?

A

-by passing them through a small hole in the positive electrode

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68
Q

Why did J.J Thomson pass the cathode rays through a small hole in the positive electrode in his experiment?

A

-to obtain a narrow beam of cathode rays

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69
Q

What did J.J Thomson pass through a small hole in the positive electrode?

A

-a narrow beam of cathode rays

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70
Q

What did J.J Thomson put a hole in during his experiment?

A

-the positive electrode

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71
Q

What did J.J Thomson do to the positive electrode in his experiment?

A

-he put a small hole in it

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72
Q

What does the narrow beam of cathode rays pass between in J.J Thompsons’ experiment?

A

-two parallel metal plates

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73
Q

What is passed between two parallel metal plates in J.J Thompson?

A

-the narrow beam of cathode rays

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74
Q

Where are the two parallel metal plates located in J.J Thompsons’ experiment?

A

-half way along the tube

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75
Q

What was located half way along the tube in J.J Thompsons’ experiment?

A

-the two parallel metal plates

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76
Q

What happened to the narrow beam of cathode rays after it passed through the two parallel metal plates in J.J Thompsons’ experiment?

A

-they then struck a fluorescent screen at the far end of the tube

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77
Q

What was located at the far end of the tube in J.J Thompsons’ experiment?

A

-a fluorescent screen

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78
Q

Where was the fluorescent screen located in J.J Thompsons’ experiment?

A

-at the far end of the tube

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79
Q

What struck a fluorescent screen at the far end of the tube in J.J Thompsons’ experiment?

A

-a narrow beam of cathode rays

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80
Q

What happened to the fluorescent screen when it was struck by the narrow beam of electrons in J.J Thompsons experiment?

A

-it glowed

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81
Q

What did J.J Thompson found happened if there was no charge on the parallel plates during his experiment?

A

-the beam of cathode rays passed straight down the tube and struck the fluorescent screen

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82
Q

When did the cathode rays pass straight down the tube and strike the fluorescent screen in J.J Thompsons’ experiment?

A

-when there was no charge on the parallel plates

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83
Q

What happens when a positive charge was put on the top plate in J.J Thompsons’ experiment?

A

-the spot where the fluorescent screen was struck moved upwards

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84
Q

When did the spot where the fluorescent screen was struck move upwards in J.J Thompsons’ experiment?

A

-when a positive charge was put on the top plate

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85
Q

What did Thomson conclude when the cathode rays were attracted up towards the positive plate in his experiment?

A

-that they consisted of negatively charged particles

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86
Q

Why did J.J Thompson conclude that the cathode rays consisted of negatively charged particles?

A

-as they were attracted up towards the positive plate and unlike charges always attract each other

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87
Q

What is the name given to negatively charged particles?

A

-electrons

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88
Q

What are electrons?

A

-the name given to negatively charged particles

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89
Q

Who is recognised as the person who discovered the electron?

A

-J.J Thompson

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90
Q

What is J.J Thompson recognised for discovering?

A

-the electron

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91
Q

In J.J Thompsons’ second experiment where did he place the large electromagnet?

A

-outside the glass tube

92
Q

What was placed outside the glass tube in J.J Thompsons’ second experiment?

A

-a large electromagnet

93
Q

What did J.J Thompson do to the magnetic field in his second experiment?

A

-he adjusted the strength of it

94
Q

What did J.J Thompson adjust the strength of in his second experiment?

A

-the magnetic field

95
Q

What did J.J Thompson find happened to the electrons in his second experiment?

A

-he found they were deflected by the magnetic field

96
Q

What was deflected by the magnetic field in J.J Thompsons’ second experiment?

A

-electrons

97
Q

What was J.J Thompson able to do to the electrons using the magnetic field in his second experiment?

A

-he was able to bring the beam of electrons back down to its original position

98
Q

From the results of his second experiment what was J.J Thompson able to calculate?

A

-the ratio of the charge of the electron to its mass

99
Q

How did J.J Thompson calculate the ratio of the charge of the electron to its mass?

A

-from the results of his second experiment

100
Q

What was J.J Thompson not able to calculate from his second experiment?

A

-he was not able to measure separately either the quantity of negative charge on the electron or the mass of the electron

101
Q

Who was able to measure the ratio of the charge of the electron to its mass?

A

-J.J Thompson

102
Q

Who set up an experiment to determine the size of the charge on the electron?

A

-Robert Millikan

103
Q

What did Robert Millikan determine?

A

-the size of the charge on the electron

104
Q

Who was Robert Millikan?

A

-an American physicist

105
Q

In Robert Millikan’s experiment what was sprayed between two charged metal plates?

A

-tiny droplets of oil

106
Q

In Robert Millikan’s experiment where were the tiny droplets of oil sprayed?

A

-between two charged metal plates

107
Q

What did Millikan use to ionise the air between the plates?

A

-x rays

108
Q

What did Millikan use x-rays for in his experiment?

A

-to ionise the air between the plates

109
Q

What happens to the molecules in the air when they are ionised in Millikan’s experiment?

A

-they lose electrons and forms ions

110
Q

What did the oil droplets pick up as they fell through the air in Robert Millikan’s experiment?

A

-electrons which came from the molecules in the air when they were ionised

111
Q

What picked up the electrons which were lost by the molecules in the air when they were ionised during Millikan’s experiment?

A

-oil droplets

112
Q

What happened to the oil droplets after they picked up the electrons which were lost by the molecules in the air when they were ionised during Millikan’s experiment?

A

-they became negatively charged

113
Q

Why did the oil droplets become negatively charged in Millikan’s experiment?

A

-they had picked up electrons

114
Q

What did Millikan do to observe the oil droplet when he placed a positive charge on the top plate during his experiment?

A

-he used a microscope to focus on a particular oil droplet as it fell through the air

115
Q

What did Millikan observed through a microscope focus on an oil droplet falling through the air when a positive charge was placed on the top plate during his experiment?

A

-the negatively charged oil droplet was attracted up towards the positive plate

116
Q

What did Millikan adjust the charge of during his experiment?

A

-the positive charge of the top plate

117
Q

Until what occurred did Millikan adjust the positive charge on the top plate during his experiment?

A

-until the oil droplet was stationary

118
Q

From various measurements that Millikan took what was he able to calculate?

A

-the size of the charge on the electron

119
Q

How was Millikan able to calculate the size of the charge on the electron?

A

-from various measurements

120
Q

Who was able to calculate the size of the charge on an electron?

A

-Robert Millikan

121
Q

What did Millikan calculate the mass of?

A

-the electron

122
Q

What did Millikan calculate of an electron?

A

-its mass

123
Q

What did J.J Thompson propose in 1898?

A

-a very simple model of the structure of an atom

124
Q

Who proposed a very simple model of the structure of an atom in 1898?

A

-J.J Thompson

125
Q

Summarise J.J Thompson’s model of the structure of an atom?

2

A
  • an atom is like a sphere of positive charge

- electrons are embedded in the sphere at random

126
Q

In J.J Thompson’s model of the structure of an atom what did he say an atom was like?

A

-a sphere of positive charge

127
Q

In J.J Thompson’s model of the structure of an atom what did he saw was like a sphere of positive charge?

A

-an atom

128
Q

In J.J Thompson’s model of the structure of an atom what type of charge did he say an atom was like a sphere of?

A

-positive charge

129
Q

In J.J Thompson’s model of the structure of an atom what did he say was embedded in the atom at random?

A

-electrons

130
Q

In J.J Thompson’s model of the structure of an atom where did he say electrons were embedded?

A

-in the atom at random

131
Q

What did J.J Thompson’s model of the structure of an atom become known as?

A

-the ‘Plum Pudding’ model

132
Q

Why did J.J Thompson’s model of the structure of an atom become known as the ‘Plum Pudding’ model?

A

-it was something like a pudding with raisins in it

133
Q

What did J.J Thompson’s model explain?

A

-why atoms were neutral

134
Q

Who was Ernest Rutherford?

A

-a scientist from New Zealand

135
Q

Who was a scientist from New Zealand who studied the scattering of particles called alpha particles?

A

-Ernest Rutherford

136
Q

Who studied the scattering of alpha particles by a very thin sheet of gold foil?

A

-Ernest Rutherford

137
Q

What did Ernest Rutherford study?

A

-the scattering of alpha particles by a very thin sheet of gold foil

138
Q

What did Ernest Rutherford use to scatter aloha particles?

A

-a very thin sheet of gold foil

139
Q

What did Rutherford use a very thin sheet of gold foil to do?

A

-scatter alpha particles

140
Q

What are alpha particles?

A

-positively charged particles produced by certain radioactive substances

141
Q

What are positively charged particles produced by certain radioactive substances?

A

-alpha particles

142
Q

What are alpha particles produced by?

A

-certain radioactive substances

143
Q

What are produced by certain radioactive substances?

A

-alpha particles

144
Q

What did Rutherford bombard with alpha particles in his experiment?

A

-a thin piece of gold foil

145
Q

What did Rutherford do to the thin piece of gold foil in his experiment?

A

-bombard it with alpha particles

146
Q

What do alpha particles consist of?

A

-groups of two neutrons and two protons stuck together

147
Q

What consist of groups of two neutrons and two protons stuck together?

A

-alpha particles

148
Q

What did Rutherford use to detect the alpha particles in his experiment?

A

-a phosphorescent screen made of zinc sulphide to detect alpha particles

149
Q

What did Rutherford use a phosphorescent screen made of zinc sulphide for in his experiment?

A

-to detect alpha particles

150
Q

What was the phosphorescent screen that Rutherford used to detect alpha particles made of?

A

-zinc sulphide

151
Q

What was made of zinc sulphide and used to detect alpha particles in Rutherford’s experiment?

A

-a phosphorescent screen

152
Q

What happens when an alpha particle strikes a phosphorescent screen?

A

-a little flash of light appears on the screen

153
Q

What did Rutherford use to observe the flashes of light which appeared on the phosphorescent screen during his experiment?

A

-a microscope

154
Q

What did Rutherford use a microscope to observe during his experiment?

A

-the flashes of light which appeared on the screen when struck by alpha particles

155
Q

What did Rutherford find happened to some alpha particles during his experiment?
(2)

A
  • they were deflected at large angles as they passed through the gold foil
  • some were deflected back along their own path
156
Q

What did Rutherford conclude from his experiment?

A

-that the positive charge and the mass of the atoms of the metal foil were concentrated in a small dense core called the nucleus of the atom

157
Q

Where did Rutherford say the positive charge and the mass of the atoms of the metal foil were concentrated in?

A

-a small dense core called the nucleus of the atom

158
Q

What did Rutherford say was concentrated in a small dense core called the nucleus of the atom?

A

-the positive charge and the mass of the atoms of the metal foil

159
Q

Who is responsible for the discovery of the nucleus?

A

-Ernest Rutherford

160
Q

What is Ernest Rutherford responsible for the discovery of?

A

-the nucleus

161
Q

What does the positively charged alpha particles repel in Rutherford’s experiment?

A

-the positively charged nucleus

162
Q

What does the positively charged nucleus repel in Rutherford’s experiment?

A

-the positively charged alpha particles

163
Q

When were the alpha particles deflected along their original paths during Rutherford’s experiment?

A

-when they collided head on with the nucleus

164
Q

What happened when the alpha particles collided head on with the nucleus during Rutherford’s experiment?

A

-they were deflected along their original paths

165
Q

What caused the alpha particles to be deflected at large angles during Rutherford’s experiment?

A

-it was caused by the alpha particles coming very close to the high concentration of positive charge in the nucleus and being repelled by this high concentration of positive charge

166
Q

What happens when alpha particles come close to the high concentration of positive charge in the nucleus of gold atoms in Rutherford’s experiment?

A

-they are repelled by this high concentration of positive charge causing them to be deflected at large angles

167
Q

Why were only a small number of alpha particles reflected back along their original paths during Rutherford’s experiment?

A

-because the positive charge and the mass of the atoms of the metal foil were concentrated in such a small dense core (nucleus)

168
Q

What three observations did Rutherford make from his experiment?
(3)

A
  • most alpha particles pass straight through the gold foil
  • some alpha particles are deflected at large angles
  • a small number of alpha particles are reflected back along their own paths
169
Q

What three conclusions did Rutherford make from his experiment?
(3)

A
  • most of the atom is empty space
  • the alpha particles are repelled when they pass near the small positive nucleus
  • a small number of alpha particles collide head on with the nucleus
170
Q

What did Rutherford conclude from his observation that most alpha particles pass straight through the gold foil?

A

-most of the atom is empty space

171
Q

What did Rutherford observe to conclude that most of the atom is empty space?

A

-most alpha particles pass straight through the gold foil

172
Q

What did Rutherford conclude from his observation that some alpha particles are deflected at large angles?

A

-the alpha particles are repelled when they pass near the small positive nucleus

173
Q

What did Rutherford observe to conclude that the alpha particles are repelled when they pass near the small positive nucleus?

A

-some alpha particles are deflected at large angles

174
Q

What did Rutherford conclude from his observation that a small number of alpha particles are reflected back along their own paths?

A

-a small number of alpha particles collide head on with the nucleus

175
Q

What did Rutherford observe to conclude that a small number of alpha particles collide head on with the nucleus?

A

-a small number of alpha particles are reflected back along their own paths

176
Q

What did Rutherford find when he bombarded light atoms such as oxygen and nitrogen with alpha particles?

A

-small positively charged particles were given off

177
Q

What were small positively charged particles given off in Rutherford’s experiments?

A

-light atoms such as oxygen and nitrogen that had been bombarded with alpha particles

178
Q

With what elements were positively charged particles not given off when bombarded with alpha particles during Rutherford’s experiments?

A

-heavier metals such as gold

179
Q

How did Rutherford explain why positively charged particles were given off of light atoms such as oxygen and nitrogen when bombarded with alpha particles?

A

-the alpha particles were breaking up the nuclei of the lighter atoms to release positively charged particles

180
Q

Why were positively charged particles not given off of heavier atoms when bombarded with alpha particles?

A

-the large positive nuclear charge repelled the alpha particles before they had a chance to break up the nucleus

181
Q

What did Rutherford call the positively charged particles which were given of by light atoms when bombarded by alpha particles?

A

-protons

182
Q

Summarise Rutherford’s work

3

A
  • he discovered that the atom consists of a small dense positive core called the nucleus
  • he discovered that positive particles called protons were located in the nucleus
  • the new structure of the atom proposed by Rutherford was that it consisted of a nucleus and that the electrons were in some sort of ‘electron cloud’ surrounding the nucleus
183
Q

What did Rutherford propose the structure of an atom was?

A

-it consisted of a nucleus and that the electrons were in some sort of ‘electron cloud’ surrounding the nucleus

184
Q

Who is responsible for the discovery of the neutron?

A

-James Chadwick

185
Q

What is James Chadwick responsible for the discovery of?

A

-the neutron

186
Q

What did James Chadwick bombard a sample of with alpha particles during his experiment?

A

-a sample of beryllium

187
Q

What did James Chadwick bombard a sample of beryllium with during his experiment?

A

-alpha particles

188
Q

What did Chadwick discover came from the beryllium during his experiment?

A

-some type of radiation consisting of particles with no charge

189
Q

What did Chadwick discover some type of radiation consisting of particles with no charge was coming from during his experiment?

A

-the sample of beryllium bombarded with alpha particles

190
Q

Why were these particles coming from the beryllium in Chadwick’s experiment difficult to detect?

A

-they were neutral

191
Q

What did Chadwick discover about the neutral particles radiating from the beryllium sample during his experiment?

A

-they were penetrating enough to knock protons out of paraffin was

192
Q

What did Chadwick discover the neutral particles radiating from the beryllium sample were penetrating enough to do during his experiment?

A

-knock protons out of paraffin wax

193
Q

What did Chadwick discover the neutral particles radiating from the beryllium sample were penetrating enough to knock protons from during his experiment?

A

-paraffin wax

194
Q

What did Chadwick discover the neutral particles radiating from the beryllium sample were penetrating enough to knock what from paraffin wax during his experiment?

A

-protons

195
Q

What did Chadwick conclude the alpha particles were knocking out of the nucleus of the beryllium atom during his experiment?

A

-neutral particles

196
Q

What did Chadwick conclude were knocking neutral particles out of the nucleus of the beryllium atom during his experiment?

A

-alpha particles

197
Q

What did Chadwick conclude the alpha particles were knocking neutral particles out of the what of the beryllium atom during his experiment?

A

-the nucleus

198
Q

What did Chadwick conclude the alpha particles were knocking neutral particles out of the nucleus of during his experiment?

A

-beryllium atoms

199
Q

What did Chadwick find the neutral particles discovered in his experiments had about the same mass?

A

-the proton

200
Q

What did Chadwick discover had about the same mass as a proton?

A

-the neutral particles discovered in his experiments

201
Q

What were neutrons subsequently used to bring about?

A

-the splitting of atoms of uranium to release nuclear energy in the atomic bomb and in nuclear reactors

202
Q

What were subsequently used to bring about the splitting of atoms of uranium to release nuclear energy in the atomic bomb and in nuclear reactors?

A

-neutrons

203
Q

What would happen if only protons existed in the nucleus?

A

-it would fall apart

204
Q

Why would the nucleus of an atom fall apart if it only consisted of protons?

A

-because of the repulsive forces of the protons for each other

205
Q

What do neutrons help to do to protons in the nucleus?

A

-‘cement’ the positively charged protons together

206
Q

What are the three sub-atomic particles?

3

A
  • protons
  • neutrons
  • electrons
207
Q

What does sub-atomic mean?

A

-inside the atom

208
Q

What word means ‘inside the atom’?

A

-sub-atomic

209
Q

What two particles are found inside the nucleus?

2

A
  • protons

- neutrons

210
Q

What particles are located somewhere in the space outside the nucleus?

A

-electrons

211
Q

What is the relative charge of a proton?

A
  • +1
212
Q

What sub-atomic particle has a relative charge of +1?

A

-proton

213
Q

What is the relative charge of a neutron?

A
  • 0
214
Q

What sub-atomic particle has a relative charge of 0?

A

-neutron

215
Q

What is the relative charge of an electron?

A
  • -1
216
Q

What subatomic particle has a relative charge of -1?

A

-electron

217
Q

What is the relative mass of a proton?

A
  • 1
218
Q

What is the relative mass of a neutron?

A
  • 1
219
Q

What sub-atomic particles have a relative mass of 1?

2

A
  • proton

- neutron

220
Q

What is the relative mass of an electron?

A
  • 1 divided by 1838
221
Q

What has a relative mass of 1 divided by 1838?

A

-electron

222
Q

Where in an atom is a proton located?

A

-nucleus

223
Q

Where in an atom is a neutron located?

A

-nucleus

224
Q

What two sub-atomic particles are located in the nucleus?

2

A
  • proton

- nucleus

225
Q

Where in an atom is an electron located?

A

-outside the nucleus

226
Q

What sub-atomic particle is located outside the nucleus?

A

-electron

Leaving Cert Chemistry (22 decks)

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