Atoms and Atomic Structure

The mass of a neutron is __.

• 1
• less than the mass of an electron
• 0
• 2

The mass of a proton is __.

• 1
• equal to the mass of an electron
• 0
• 2

The mass of an electron is __.

• 0
• more than the mass of a proton
• 1
• 2

The mass of a particular atom is its __.

• atomic mass
• atomic number
• mass number
• atomic mass number

The smallest particles of matter are called

• atoms
• protons
• electrons
• neutrons

The sum of protons and neutrons around the nucleus

• atomic number
• mass number
• average atomic mass
• mass amount

What are the 2 main parts of the atom?

• proton, neutron
• nucleus, electron cloud
• Electron cloud, neutron
• electron cloud, proton

Which part of the atom stores the protons and neutrons

• proton cloud
• The nucleus
• electron cloud
• neutron cloud

what part of the atom stores the negative particles?

• proton cloud
• The nucleus
• electron cloud
• neutron cloud

The farther an electron is from the nucleus, the more _________ it has.

• charge
• energy
• mass
• size