Atomic structure - Eduqas

1

Which of these describes an alpha particle?

2

What did the Geiger-Marsden experiment show about the structure of the atom?

3

What is the centre of the atom called?

4

Which particles are found in the nucleus?

5

What is the relative charge of a neutron?

6

Which subatomic particle has the lowest mass?

7

What is the definition of atomic number?

8

An atom of potassium is written as _{19}^{39}\textrm{K}. What is the mass number of this atom?

9

How many neutrons are in the atom _{35}^{99}\textrm{Br}?

10

How does the size of the nucleus compare to the size of the atom?