PHS Edexcel sC3_Atomic Structure

What are the three particles that make up an atom? (tick all that apply)

• proton

• neutron

• electron

• ion

What is the relative charge of a proton?

• +1 (positive)

• -1 (negative)

• 0 (no charge)

What is the relative charge of an electron?

• +1 (positive)

• -1 (negative)

• 0 (no charge)

What is the relative charge of a neutron?

• +1 (positive)

• -1 (negative)

• 0 (no charge)

What is the relative mass of a proton?

• 1

• 0

• -1

• 1/1835

What is the relative mass of a neutron?

• 1

• 0

• -1

• 1/1835

What is the relative mass of an electron?

• 1

• 0

• -1

• 1/1835

Which subatomic particles do you find in the nucleus of an atom?

• protons only

• protons and neutrons

• protons and electrons

• neutrons and electrons

Who first came up with the idea of all matter being made up of tiny, hard spheres called atoms, that cannot be broken down into smaller parts?

• John Dalton

• JJ Thomson

• Ernest Rutherford

• James Chadwick

Who discovered electrons, and came up with the idea of the "plum pudding" model?

• John Dalton

• JJ Thomson

• Ernest Rutherford

• James Chadwick