3.2 Atoms and Ions

Question 1

Relative mass of a proton

Answer 1

1

Question 2

Relative mass of a Neutron

Answer 2

1

Question 3

Relatice mass of an electron

Answer 3

0.0005

Question 4

Relative charge of a proton

Answer 4

1+

Question 5

Relative charge of a neutron

Answer 5

0

Question 6

Relative charge of an electron

Answer 6

1-

Question 7

What is the mass nunber of an atom the same as?

Answer 7

Protons and Electrons

Question 8

How to find the number of neutrons

Answer 8

Mass of the atom - Number of protons

Question 9

Group number is… what

Answer 9

Numebr of electrons on the atoms outer shell

Question 10

Define Isotope

Answer 10

Atoms of the same element with the same number of protons and a different number of neutrons

Question 11

How to find the RAM?

Answer 11

1. • mass of each isotope by the abundance (%)
2. Add together
3. Divide by 100

Question 12

Name and state the use of He

Answer 12

Cooling

Question 13

Why are atoms of noble gases unreactive?

Answer 13

They are atoms and group 8/0
therefore have a full outer shell

Question 14

Hwo to find the number of occupied electron shells on periodic table?

Answer 14

Check period number

Question 15

Define the term ‘ionic bonding’

Answer 15

Electrostatic attraction between opposite charged ions

Question 16

Explain why Calcium Oxide has a high melting point

Answer 16

• Strong electrostatic bonds (as it is in a giant ionic lattice formation) between positively and negatively charged ions.
• Means more heat reauired to break them down.