8th Grade Unit 2 Review

Front

What is a substance?

Back

Matter with consistent (same) properties throughout.

Front

What type of change is rusting?

Back

A chemical change.

Front

What is the identity of a solid sample with a density greater than 6 g/cm³ that conducts electricity and burns with a blue flame?

Back

Zinc.

Front

How can hydrogen and oxygen combine to form molecules?

Back

Hydrogen and oxygen can combine in many ways to form different molecules.

Front

What is the relationship between molecules and atoms?

Back

Molecules are made up of two or more atoms.

Front

What is matter?

Back

Anything that has mass and takes up space.

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 an atom?

Back

The smallest unit of an element that retains the properties of that element.

Front

What is a molecule?

Back

A group of two or more atoms bonded together.