Parts of an Atom

Front

What are the smallest particles into which an element can be divided and still be the same substance?

Back

Atoms

Front

What is the unit used to express the masses of particles in atoms?

Back

Atomic Mass Unit (AMU)

Front

How many electrons can the 2nd energy level of an atom hold?

Back

8

Front

Atoms are mostly _________ space.

Back

empty

Front

What subatomic particle does NOT contribute significantly to the mass of an atom?

Back

electron

Front

What are the three main subatomic particles of an atom?

Back

Protons, Neutrons, Electrons

Front

What is the charge of a proton?

Back

Positive

Front

What is the charge of an electron?

Back

Negative

Front

What is the charge of a neutron?

Back

Neutral

Front

Where are protons and neutrons located in an atom?

Back

In the nucleus