CHEM MASTERS Flashcards

1
Q

Everything around us is made up of

A

Matter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Air that we breathe is matter
True or false

A

true

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

All the matter in the universe originated from the

A

Big bang

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How did the Big Bang create all matter

A
  1. During the Big bang large amounts of energy was released
  2. These bundles of energy formed tiny particles from which all matter was created
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Name some types of Energy

A
  1. Light energy
  2. heat energy
  3. Chemical energy
  4. Solar energy
  5. Electrical energy
  6. Magnetic energy
  7. Sound energy
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

The word material is derived from the word

A

matter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Define matter

A

Anything that occupies space and has mass

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Define Volume

A

The space occupied by matter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Do atoms usually have an independent existence

A

NO

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Two or more atoms combine to form a

A

Molecule

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

The Symbol O represents

A

The Oxygen atom

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

This symbol represents

A

The Oxygen gas which is a molecule made of two atoms of oxygen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Can atoms and molecules be seen with the naked eye or through a simple microscope

A

NO

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

name the Indian Philosopher who proposed that matter is made of Atoms almost 2600 years ago

A

Kannada

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

In the modern times who proposed that matter is made of Atoms

A

John dalton

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Define INTERMOLECULAR FORCE

A

Particles of matter are held together by a force of attraction called INTERMOLECULAR FORCE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Particles of matter are always in a Random Motion
True or false

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

The particles of motion that are in Random motion posses a kind of energy called

A

KINETIC ENERGY

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

How can we increase the Kinetic energy of the particles

A

by heating it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Particles of matter have spaces between them called

A

Intermolecular space

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Solids are of two types

A
  1. Hard solids
  2. Soft solids
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Solids have how many free surfaces

A

many

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Liquids have how many free surfaces

A

One

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Gases have how many free surfaces

A

None

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

List the properties of Solids

A
  1. They have a definite volume
  2. They are Rigid
  3. They have a definite shape and theyb retain their shape
  4. Incompressible
  5. Any number of free surfaces
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Gases exert equal pressure on all sides.
True or false

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Define AIR

A

Air is a mixture of gases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Define FLUID

A

All substances that can flow is called a fluid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

Give examples of fluids

A

Liquids and Gases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Do atoms of a solid move

A

No
They only vibrate about their mean position

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

What are the two factors that create the different states of matter

A
  1. Intermolecular force of attraction
  2. Intermolecular space
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

The Random motion of particles are of two types

A
  1. Browinian Motion
  2. Diffusion
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

Define Brownian Motion

A

The Zig Zag motion of a particle in a suspended medium is called Brownian motion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

What is diffusion

A

The phenomenon of intermixing of particles of one type with another is called Diffusion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

Name the fluid that diffuses very easily

A

Gases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

Liquids diffuse slower than Gases.
True or false

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

What are Miscible Liquids

A

Liquids that micx with each other

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

Give an example of Miscible liquids

A

Water and alcohol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

Liquids that dont mix with each other are called

A

Immiscible liquids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

Give an example of Immiscible Liquid

A

Oil and water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

What is the effect of Temperature on Diffusion

A

When temperature increases the rate of diffusion increases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

Why dont solids diffuse under Normal conditions

A

Solids are very rigid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

Give three examples of diffusion

A
  1. Leakage of LPG gas
  2. Red ink in water
  3. Incense stick
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

What is INTERCONVERSION OF STATES OF MATTER

A

Matter can change from one state to another under certain conditions of Temperature and pressure without any change in its chemical properties

Please Take care

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

Give three examples of Pressure causing a change in State of matter

A
  1. under normal conditions the LPG is a a gas but in the cylinder its liquid under high pressure.
  2. oxygen is a gas but in the oxygen cylinder its liquid under pressure
  3. The hardest rock under the earths crust melts under high temperature and pressure
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

What is Sublimation

A

The conversion of a solid substance to a gaseous state without undergoing a liquid stae on heating

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
47
Q

Give examples of sublimation

A
  1. Camphor
  2. Naphthalene
  3. Iodine
  4. Dry ice
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
48
Q

What is dry ice

A

Solid Carbon dioxide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
49
Q

Define MELTING POINT

A

The FIXED TEMPERATURE at which solid changes to a liquid at a given PRESSURE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
50
Q

The Melting point of ice is

A

Zero degree celsius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
51
Q

The Freezing point of water is

A

Zero degree celsius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
52
Q

Vaporisation is also known as

A

Evaporation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
53
Q

Define vaporisation

A

The process by which a substance changes from a liquid state to a vapour state

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
54
Q

Can Evaporation occur at room temperature

A

Yes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
55
Q

Can Boiling occur at room temperature

A

No

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
56
Q

What is boiling

A

The change of state from a liquid to a gaseous state by heating.
Boiling is the extreme form of vaporisation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
57
Q

Define Boiling Point

A

The fixed temperature at which a liquid starts changing to a gaseous state

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
58
Q

Define Condensation

A

The process by which a gaseous state changes to a liquid state is called Condensation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
59
Q

Condensation is also known as

A

Liquefaction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
60
Q

Define Condensation Point

A

The definite temperature at which a gaseous state changes to a liquid state

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
61
Q

the condensation point of Steam is

A

100 degree celsius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
62
Q

Freezing is aka

A

Solidification

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
63
Q

Define Freezing

A

The process by which a substance changes from a liquid to a solid state

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
64
Q

Define Freezing Point

A

The definite temperature at which liquid changes to a solid state

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
65
Q

What is THERMAL EXPANSION

A

All the states of matter expand on heating. This is called Thermal Expansion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
66
Q

This thin glass tube with a small internal diameter is called

A

Capillary Tube

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
67
Q

The Thermometer is constructed based on which scientific principle

A

Liquids expand on heating and contract on cooling

68
Q

List the three most important effects of heat on Matter

A
  1. Interconversion of states of matter
  2. Thermal expansion
  3. Chemical change
69
Q

The permanent change in which a new substance is created from the substances takes is known as

A

Chemical change

70
Q

Give an example of a Physical and chemical change

A
  1. The candle wax burns..Physical change
  2. The vapour produced when the wax burns reacts with air and produces Carbon dioxide and water..Chemical change
71
Q

Chemically matter can be divide into

A
  1. Elements
  2. Compounds
  3. Mixtures
72
Q

List 6 properties of a pure substance

A
  1. It has definite physical and chemical properties
  2. It has a fixed melting and boiling point
  3. It cannot be broken into simpler substances
  4. Has a uniform composition throughout. HOMOGENOUS
  5. Are of two types. Elements and compounts
73
Q

Define an Element

A

An element is a pure substance made up of only one type of atom

74
Q

Define a Compound

A

a Compound is a pure substance made up of only one type of molecule

75
Q

is water a pure substance

A

yes

76
Q

Is water mixed with salt a pure substance

A

No

77
Q

So far how many elements are there on the Periodic Table

A

118

78
Q

How many elements of the Periodic table are found in Nature in the soil, rocks, air and water

A

92

79
Q

How many elements of the periodic table are artificially made

A

26

80
Q

On the basis of properties elements are classified into

A
  1. Metas
  2. Non Metals
  3. Metalloids
  4. Inert Gases/Noble Gases
81
Q

Most of the elements on the periodic table belong to which category

A

Metals

82
Q

Is calcium a Metal

A

Yes

83
Q

List the seven properties of Metals

A
  1. Metals are solids
  2. Metals have a shine. Lustre
  3. Metals have a high BP and MP
  4. Good conductors of heat and electricity
  5. Malleable
    6.Ductile
  6. Produce a specific sound when struck ( Sonorous)
84
Q

Name a metal in the liquid stae

A

Mercury

85
Q

name a metal that is not malleable but very brittle

A

Zinc

86
Q

Name a soft metal

A

Sodium Na

87
Q

Name a metal that is a bad conductor of heat and electricity

A

Tungsten

88
Q

Why are metals good conductors of electricity

A

Because metals have free electrons

89
Q

Most of the non metals are in which state

A

Soft solids and gases

90
Q

Name a Non metal in the liquid state

A

Bromine

91
Q

Give three examples of Soft Solids

A

Phosphorous P
Iodine I
Sulphur S

92
Q

Give examples of non metals in the Gas state

A
  1. oxygen
  2. Hydrogen
  3. Nitrogen
  4. Chlorine
93
Q

Non metals are bad conductors of heat and electricity. What are the exceptions

A

Graphite

94
Q

Non metals have a low boiling and Melting point. Name the exceptions

A

Graphite
Diamond

95
Q

Non metals have a dull surface. Give the exceptions

A

Iodine
carbon ( Graphite and diamond)

96
Q

Give example of carbon as a hard solid

A

Diamond

97
Q

Give examples of Carbon as soft solid

A
  1. Coal
  2. Charcoal
  3. graphite
98
Q

What is the difference between Coal and Charcoal

A
  1. Coal is a natural Mineral
  2. Charcoal is burnt wood
99
Q

Elements that are neither metals nor non metals are called

A

METALLOIDS

100
Q

Give examples of METALLOIDS

A
  1. Arsenic
  2. Polonium
  3. Antimony
  4. Tellurium
  5. Boron
  6. Silicon
  7. Germanium
101
Q

Give examples of Inert gases aka Noble gases

A
  1. Xenon
  2. Helium
  3. Krypton
  4. Neon
  5. Argon
  6. radon
102
Q

Why are the Noble gases called Inert gases

A

Because they do not react with other elements

103
Q

The horizontal rows on the periodic table are called

A

PERIODS

104
Q

The vertical columns on the periodic table are called

A

GROUPS

105
Q

The simplest element formed after the Big bang was

A

Hydrogen
This was followed by helium

106
Q

The universal element is

A

Hydrogen
helium

107
Q

The elements that make up the earths crust is

A
  1. Oxygen
  2. Silicon
  3. iron
  4. Aluminium
108
Q

The element abundant in the atmosphere is

A

Nitrogen

109
Q

The element abundant in the human body

A
  1. carbon
  2. oxygen
  3. Hydrogen
110
Q

Define a compound on the basis of Element

A

A compound is a pure substance formed by the chemical combination of two or more elements in a definite proportion by mass

111
Q

can the components of a compound be separated by simple physical means

A

No

112
Q

When a compound is created is ENERGY absorbed or evolved

A

Yes

113
Q

When a MIXTURE is created is ENERGY absorbed or evolved

A

NO

114
Q

Can water be separated by Simple Physical Means

A

No

115
Q

Why cant water be separated by simple physical means

A

Because water is a compound

116
Q

How can water be separated

A

By a chemical process called ELECTROLYSIS

117
Q

What is ELECTROLYSIS

A

It is a chemical process where electric current is passed through a compound in liquid state to separate its CONSTITUENT ELEMENTS

118
Q

Describe Chlorine

A

Chlorine is a Greenish yellow poisonous Gas and highly reactive

119
Q

Does Sodium Na readily react with air and water

A

Yes

120
Q

How can we separate the substances in a mixture by simple physical means

A
  1. Filtration
  2. Evaporation
    3.Decantation
  3. Sedimentation
121
Q

What is ATOMICITY

A

The number of Atoms in the molecule of an element

122
Q

Name Diatomic molecules

A
  1. Oxygen
  2. Hydrogen
  3. Nitrogen.
  4. Chlorine
123
Q

Name triatomic molecules

A

Ozone. made of three atoms of oxygen

124
Q

What are polyatomic molecules

A

molecules made of more than three atoms

125
Q

Give examples of Polyatomic molecules

A

Phosphorous is P4
Sulphur is S8

126
Q

Name monoatomic molecules

A
  1. Sodium
  2. Potassium
    3.Calcium
127
Q

Plural of Formula

A

Formulae

128
Q

Pure Diamond is used as a

A

Gem

129
Q

Impure diamond is used to

A

Cut glass

130
Q

Name the metal used in heavy tools and machines

A

Iron

131
Q

Gas filled in electric bulbs

A

Neon
Argon

132
Q

Define a MIXTURE

A

When two or more pure substances are mixed together in any propotion that they do not undergo any chemical change and retain their individual property

133
Q

Mixtures are pure substances
True or false

A

False. Mixtures are impure substances

134
Q

Mixtures are of two types

A

1.Homogenous
2. Heterogenous

135
Q

Most of the mixtures occurring in nature are of what type

A

Heterogenous

136
Q

What is a HETEROGENOUS MIXTURE

A

When the constituents of the mixture are not evenly distributed throughout its volume and can be easily seen seperately

137
Q

What is a HOMOGENOUS MIXTURE

A

When the constituents of the mixture are evenly distributed throughout its volume and cannot be seen seperately

138
Q

Give Examples of Solid in Solid Heterogenous Mixture

A
  1. Sand and iron fillings
  2. sand and sugar
  3. Sand and salt
  4. Soil
    5.Sulphur and Iron Fillings
139
Q

Give four examples of Solid in Liquid Heterogenous Mixture

A
  1. Chalk in water
  2. Charcoal in water
    3.Sand in Water
  3. Pond water
140
Q

What are the constituents of Soil

A
  1. Sand
  2. Clay
  3. Minerals
141
Q

Give two examples of Liquid in Liquid Heterogenous Mixture

A
  1. Oil in water
  2. Petrol in water
142
Q

Give two examples of Heterogenous Mixtures Solid in Gas

A
  1. Smoke
  2. Dust
143
Q

Give an example of a Heterogenous mixture liquid in Gas

A

MIST ( water in air )

144
Q

Give an example of Solid in solid Homogenous Mixture

A

Alloy

145
Q

Five examples of Solid in Liquid Homogenous mixtures

A
  1. Salt in water
  2. Sugar in water
  3. Nitrite in water
  4. Iodine in alcohol
  5. Sulphur in carbon disulphide
146
Q

Give examples of Liquid in Liquid Homogenous Mixture

A
  1. Water in alcohol
  2. Water and vinegar
  3. Water and acetone
  4. Oil and carbon tetrachloride
147
Q

Give examples of gas in liquid Homogenous Mixture

A
  1. Carbon dioxide in water
  2. Ammonia in water
148
Q

Name this chemical and in what state does it occur

A

Carbon Tetrachloride in liquid state

149
Q

Water is lighter than oil
True or false

A

False. Oil is lighter than water

150
Q

Name four alloys

A
  1. Brass
  2. Bronze
  3. Steel
  4. Duralumin
151
Q

Brass is composed of

A

copper Cu and Zinc Zn

152
Q

The chemical symbol for tin is

A

Sn

153
Q

Bronze is made of

A

1.Copper Cu
2. Tin. Sn
3. Zinc. Zn

154
Q

Steel is an alloy made of

A
  1. Iron. Fe
  2. Carbon. C
155
Q

Duralumin is an alloy made of

A
  1. Aluminium Al
  2. Copper Cu
    with a little of manganese ( Mn ) and Magnesium (Mg)
156
Q

Where is the alloy Duralumin used

A

In Spacecraft
Spacecraft material should be light and strong. Aluminium is light but not very strong and this is strenghtened with manganese and magnesium

157
Q

The substance in which a solute is dissolved is

A

Solvent

158
Q

The substance which is added and dissolved in a solvent is

A

Solute

159
Q

What is a solution

A

The homogenous mixture of solute and solvent

160
Q

What is pure water

A

water with no impurities

161
Q

Where is pure water used

A
  1. Batteries
  2. Laboratories to make medicines
162
Q

Crude peteroleum oil can give us

A
  1. LPG Liquefied Petroleum Gas
  2. CNG Compressed Natural Gas
  3. Petrol
  4. Diesel
  5. Kerosens
163
Q

Carbon in its natural form is a

A

Black solid

164
Q

What is SEPERATION

A

The process by which constituents of a mixture are are seperated from one another to get a pure substance

165
Q

Name the six processes used to separate Solid -Solid Mixtures

A
  1. Magnetic Separation
  2. Hand picking
  3. Sieving
  4. Sublimation
  5. Solvent extraction
  6. Winnowing

Magnetic Hand sieves Sub Soil, Wins