Properties of Matter (Flashcard Review)

Front

What does a chemical equation show?

Back

A chemical change.

Front

What is the atomic number of an element with three protons in its nucleus?

Back

3.

Front

The atomic number tells you...

Back

Number of protons.

Front

Which are the reactants in the following reaction: 2Mg + O2 ---> 2MgO?

Back

2Mg + O2.

Front

Is the equation 2HgO → 2Hg + O2 balanced?

Back

Is balanced.

Front

What is matter?

Back

Anything that has mass and takes up space.

Front

What are the three states of matter?

Back

Solid, liquid, gas.

Front

What is a physical change?

Back

A change that does not alter the chemical composition of a substance.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.