What is radioactivity? - OCR 21C

1

What is the relative mass of the proton?

2

What is the relative charge on the neutron?

3

Uranium-235 has 92 protons. How many neutrons does it have?

4

What is an isotope?

5

Who suggested the plum pudding model?

6

What does most of the alpha particles going straight through the gold foil show?

7

What is gamma radiation?

8

What has an ionised atom lost or gained?

9

Which form of radiation has the greatest ionising ability?

10

What is an alpha particle?