atomic theory

Question 1

atoms are made up of

Answer 1

protons, neutrons and electrons

Question 2

electron location:

Answer 2

energy levels outside the nucleus

Question 3

proton location:

Answer 3

inside nucleus

Question 4

neutron location:

Answer 4

inside nucleus

Question 5

electron mass:

Answer 5

nearly 0

Question 6

proton mass:

Answer 6

1

Question 7

neutron mass:

Answer 7

1

Question 8

proton charge:

Answer 8

positive, +1

Question 9

electron charge:

Answer 9

negative, -1

Question 10

neutron charge:

Answer 10

none

Question 11

atomic no. of an elements tells you

Answer 11

how many protons an atom contains

Question 12

1st energy level can hold

Answer 12

2 electrons

Question 13

2nd energy level can hold

Answer 13

8 electrons

Question 14

a period goes

Answer 14

across the period table

Question 15

groups are

Answer 15

columns in the periodic table

Question 16

all elements in the same group have

Answer 16

the same no. outer electrons

Question 17

mass number or an element is equal to

Answer 17

no. of protons + no. of neutrons

Question 18

isotopes are

Answer 18

atoms with the same atomic no. but different mass no.

Question 19

nuclide notation arrangement:

Answer 19

atomic no at the top

mass no at the bottom

Question 20

relative atomic mass (RAM) is

Answer 20

average mass of all the isotopes of a single element

Question 21

atoms are neutral because

Answer 21

they have an equal no. of positive protons and negative electrons

Question 22

when the no. of protons and electrons are not equal,

Answer 22

an ion is formed

Question 23

an ion is

Answer 23

a charged particle that is formed when an atom gains or loses electrons

Question 24

metals atoms …… electrons to form …

Answer 24

lose electrons to form positive ions

Question 25

non-metal atoms …… electrons to form..

Answer 25

gain electrons to form negative ions

Question 26

noble gases have a

Answer 26

stable electron arrangement