DCSG Y10 Radioactivity - What do you already know?!

What is the relative charge of an electron?

• +2

• +1

• 0

• -1

• -2

What is the relative charge of a proton?

• +2

• +1

• 0

• -1

• -2

What is the relative charge of a neutron?

• +2

• +1

• 0

• -1

• -2

A proton and a neutron have almost identical masses. Roughly how many times heavier than the electron are they?

• 1.8

• 18

• 1800

• 180,000

Identify the blue particle in this diagram.

(remember that the particles aren't actually a colour, it is just a way to depict them)

• proton

• electron

• neutron

• none of the above

Identify the grey particle in this diagram.

(remember that the particles aren't actually a colour, it is just a way to depict them)

• proton

• electron

• neutron

• none of the above

What is the atomic number of the atom in this diagram?

• 4

• 5

• 9

• 13

What is the mass number of the atom in this diagram?

• 4

• 5

• 9

• 13

What element is the atom in this diagram?

• Helium

• Lithium

• Beryllium

• Carbon

What type of force binds electrons to the nucleus and is this force attractive or repulsive?

• Electrostatic, attractive

• Electrostatic, repulsive

• Nuclear strong force, attractive

• Nuclear strong force, repulsive