Basic Atomic Structure

Which subatomic particle did Thomson discover?

• nucleus

• electron

• neutron

• proton

• lepton

Who first discovered neutrons?

• Thomson

• Rutherford

• Dalton

• Democritus

• Chadwick

What charge does a neutron have?

• none

• 1+

• 1-

• 2+

• The charge varies.

A beta particle has the same charge as a(n) ______.

• electron

• neutron

• proton

• nucleus

Tags

NGSS.HS-PS1-8

Which element was used as the standard for the atomic mass unit?

• hydrogen

• carbon

• calcium

• helium

• oxygen

Which subatomic particles are in the nucleus?

• protons only

• protons and electrons

• neutrons and electrons

• neutrons only

• protons and neutrons

What is the overall charge on a nucleus?

• positive

• negative

• no charge

• May be positive or negative.

Which subatomic particle has the lightest mass?

• proton

• electron

• neutron

• nucleus

Isotopes of the same element have the same _________.

• mass number

• mass

• atomic number

• number of neutrons

Isotopes of the same element have different ______.

• atomic numbers

• number of protons

• number of electrons

• masses

Tags

NGSS.HS-PS1-8