Unit 3 8th Grade Vocabulary

Front

What is a change to a substance caused by a reaction that results in a new substance being formed?

Back

Chemical Change

Front

What are the properties of matter that can be easily observed and describe the physical characteristics of an object?

Back

Physical Properties

Front

What is a substance that consists of only one type of atom, such as O2, H, Pt, Fe, or Au?

Back

Element

Front

What law states that in a closed system, mass remains constant?

Back

Law of Conservation of Mass

Front

What are the chemicals in a reaction that are necessary for it to occur?

Back

Reactants

Front

What is the term for a change that does not alter the chemical composition of a substance?

Back

Physical Change

Front

What do you call a substance made of two or more different types of atoms bonded together?

Back

Compound

Front

What is the term for the substances produced as a result of a chemical reaction?

Back

Products

Front

What is the principle that states matter cannot be created or destroyed in a chemical reaction?

Back

Law of Conservation of Mass

Front

What is the term for a mixture that has a uniform composition throughout?

Back

Homogeneous Mixture