Key Area 2: Nuclear Chemistry

Question 1

Radioactive decay involves?

Answer 1

Changes in the nuclei of atoms

Question 2

Unstable nuclei are called?

Answer 2

Radioisotopes

Question 3

Radioisotopes can become stable nuclei by giving out?

Answer 3

Alpha, Beta or Gamma radiation

Question 4

Alpha particles consist of?

Answer 4

Two protons, two neutrons and carry a double positive charge

Question 5

Alpha particles have a range of?

Answer 5

Only a few cm in the air and are stopped by a piece of paper

Question 6

Alpha particles will be attracted towards a?

Answer 6

Negatively charged plate

Question 7

A positively charged plate is called an?

Answer 7

Anode

Question 8

A negatively charged plate is called a?

Answer 8

Cathode

Question 9

Beta particles are electrons ejected?

Answer 9

From the nucleus of an atom

Question 10

Beta particles can travel?

Answer 10

Over a meter in air but can be stopped by a thin sheet of aluminium

Question 11

Beta particles will be attracted towards a?

Answer 11

Positively charged plate

Question 12

Gamma rays are not?

Answer 12

Deflected by an electrical field

Question 13

Gamma rays are able to travel?

Answer 13

Great distances in the air

Question 14

Gamma rays are?

Answer 14

Electromagnetic waves emitted from within the nucleus of an atom

Question 15

Gamma rays can be stopped by barriers made of materials like?

Answer 15

Lead and concrete

Question 16

Alpha particle is represented as?

Answer 16

4
He
2

Question 17

A beta particle can be represented as?

Answer 17

0
e
-1

Question 18

A proton can be represented as?

Answer 18

1
p
1

Question 19

A neutron can be represented as?

Answer 19

1
n
0

Question 20

The sum of the atomic numbers of the left of the arrow equal the?

Answer 20

Sum of the atomic numbers on the right of the arrow

Question 21

The sum of the mass number on the left of the arrow?

Answer 21

Equals the sum of the mass numbers in the right of the arrow