Atoms and Elements

True or False: The majority of an atom is made up of empty space

• True

• False

Which scientist developed the atomic theory?

• JJ Thomson

• Ernest Rutherford

• John Dalton

• James Chadwick

Subatomic particles with a positive charge

• neutrons

• atomic mass

• protons

• isotopes

Subatomic particles that are neutral in charge

• Neutrons

• Protons

• Nucleus 

• Electrons

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

A small positively charged particle found in the the nucleus of an atom is called

• proton

• energy level

• nucleus

• matter

___________ are the smallest particles in an element.

• Protons

• Atoms

• Nucleus

• milk

An __________ is a substance that cannot be broken down into any other substance by chemical or physical means. (pure substance)

• nucleus

• element

• neutron

• proton

The central core of an atom which contains protons and usually neutrons is called the

• nucleus

• protons

• elements

• scientific theory

Negatively charged particles that move around outside the nucleus off an atom

• compound

• element

• electron

• neutron

Tags

NGSS.MS-PS2-3