Atomic Theory & Atomic Structure

Front

What subatomic particle determines the identity of an element?

Back

Protons

Front

What is the smallest unit of an element that retains all the properties of that element?

Back

Atom

Front

What do we call an atom that has a net electric charge due to the loss or gain of one or more electrons?

Back

Ion

Front

What is the name of the dense, positively charged center of an atom?

Back

Nucleus

Front

True or False: Atoms are mostly made up of empty space.

Back

True

Front

What is the charge of protons?

Back

Positive

Front

What is the charge of electrons?

Back

Negative

Front

What is the mass of a neutron compared to a proton?

Back

Approximately equal

Front

What is the term for the number of protons in the nucleus of an atom?

Back

Atomic number

Front

What is the term for the average mass of an element's isotopes?

Back

Atomic mass