Y9 - The atom

Where are electrons located in an atom

• shells

• nucleus

• electric field

• vacuum

Where are protons located in an atom

• shells

• nucleus

• electric field

• vacuum

Where are neutrons located in an atom

• shells

• nucleus

• electric field

• vacuum

What is the relative mass of a neutron?

• 1

• 0

• +1

• 1/1840

What is the relative mass of a proton?

• 1

• 0

• +1

• 1/1840

What is the relative mass of an electron?

• 1

• 0

• -1

• 1/1840

What is the relative charge of an electron?

• 1

• 0

• -1

• 1/1840

What is the relative charge of a proton?

• 1

• 0

• -1

• +1

What is the relative charge of a neutron?

• 1

• 0

• -1

• +1

How many electrons can fit in the first shell (the one closest to the nucleus)?

• 2

• 4

• 6

• 8