C4.2

Question 1

Relative mass of proton

Answer 1

1 hydrogen atom

Question 2

Relative mass of electron

Answer 2

Almost zero

Question 3

Relative mass of neutron

Answer 3

1 hydrogen atom

Question 4

Protons in an electron found by:

Answer 4

Proton no.

Question 5

Electrons in an atom found by:

Answer 5

Same as proton (proton number)

Question 6

Neutrons in an atom found by:

Answer 6

Relative atomic mass - proton number

Question 7

Why do group 1 elements tend to form 1+ ions

Answer 7

More likely to lose an electron (negative)

so has more protons in a nucleus than electrons outside
Protons give it a 1+ charge

Question 8

Why do group 7 elements tend to form a 1- charge?

Answer 8

More likely to gain 1 electron than lose any from another atom

Gains electron,therefore gains 1 negative charge

Question 9

Where is an electron in a helium atom?

Answer 9

In orbit of the atom

Question 10

Where are the protons and neutrons in a helium atom?

Answer 10

In the nucleus

Question 11

All the atoms of the same element have the same what?

Answer 11

Number of protons

Question 12

Elements in the periodic table are arranged in order of what?

Answer 12

Proton number

Question 13

The light emitted from a particular element gives what?

Answer 13

A characteristic line spectrum

Question 14

The study of what has helped chemists to study what?

Answer 14

Spectra

Discover new elements

Question 15

The discovery of some elements depended on what? And example

Answer 15

The development of new practical techniques for example spectroscopy

Question 16

If an element is in group 6, how many electrons will they have on their outer shell

Answer 16

6

Question 17

The further away the outer shell becomes….

Answer 17

The weaker the attraction is,so the less reactive it is

Question 18

Why is Florine more reactive than chlorine?

Answer 18

It’s outer shell is closer to the nucleus

Question 19

Group 7 elements want to ______ an electron, this is easier the higher up the table they are. Why?

Answer 19

Because it’s closer to the positive charges

Question 20

For group 1 elements,it is easier to ____ an electron when the electron is what? Why?

Answer 20

Further away from the nucleus,because there is less of a bond

Question 21

Why do group 1 elements react with group 7 elements so violently?

Answer 21

Group 1 wants to try to lose 1 electron,group 7 wants to gain an electron- both help to gain a full outer shell