Matter and Energy Review

Front

What are the three states of matter?

Back

Solid, Liquid, Gas.

Front

What do the green particles represent in a model of matter?

Back

Gas.

Front

What particles make up the nucleus of an atom?

Back

Protons and Neutrons.

Front

What is the charge of protons?

Back

Positive.

Front

What is the charge of neutrons?

Back

No charge.

Front

What is the charge of electrons?

Back

Negative.

Front

What determines how an element reacts chemically with other elements?

Back

The number of valence electrons.

Front

What is the atomic number of sodium (Na)?

Back

11.

Front

How many protons are in a neutral sodium atom?

Back

11.

Front

How many electrons are in a neutral sodium atom?

Back

11.