Matters and Their Interactions Review

Front

A compound is a pure substance made up of ____________ elements that are chemically combined.

Back

two or more

Front

How can you use physical properties to determine if two unknown samples of gray metals are the same?

Back

compare their densities

Front

Which of the following involves a change in chemical properties?

Back

mixing vinegar and baking soda to make bubbles of CO₂

Front

In a chemical equation, the formulas to the right of the arrow are called ___________________

Back

products

Front

A measure of the amount of matter in an object is called _____________.

Back

Mass

Front

What is the definition of density?

Back

Density is the mass of an object divided by its volume.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What are reactants in a chemical equation?

Back

Reactants are the starting substances that undergo a chemical change.

Front

What is the formula for calculating density?

Back

Density = Mass / Volume

Front

What happens to the mass of substances during a chemical reaction?

Back

The mass of the substances remains the same; it is conserved.