8th Grade Unit 2 Review

Front

What is NOT an indicator of a chemical reaction?

Back

A phase change.

Front

What are reactants in a chemical reaction?

Back

Substances that are combined to form new substances called products.

Front

What do the products of a chemical reaction contain compared to the reactants?

Back

The same number of atoms as the reactants but have different properties.

Front

What is the smallest unit of a compound?

Back

Molecule.

Front

What is the basic building block of matter?

Back

Atom.

Front

What particles make up an atom?

Back

Electrons, protons, and neutrons.

Front

What happens to matter during a chemical reaction?

Back

Matter is neither created nor destroyed; it is transformed.

Front

What is a chemical reaction?

Back

A process where reactants are transformed into products.

Front

What is an example of a physical change?

Back

Melting ice.

Front

What is an example of a chemical change?

Back

Burning wood.