Quiz on Basic Chemistry Concepts

What is the smallest unit of matter that retains the properties of an element?

• Molecule

• Atom

• Compound

• Element

Which of the following is a pure substance made of only one type of atom?

• Compound

• Element

• Molecule

• Mixture

What are substances that start a chemical reaction called?

• Products

• Reactants

• Compounds

• Elements

Tags

NGSS.MS-PS1-5

What are substances formed from a chemical reaction called?

• Reactants

• Elements

• Products

• Compounds

Tags

NGSS.MS-PS1-5

What is a change in the form of a substance without changing its chemical identity?

• Chemical Change

• Physical Change

• Conservation of Mass

• Atomic Structure

Tags

NGSS.MS-PS1-4

What is a change that results in the formation of one or more new substances?

• Physical Change

• Chemical Change

• Conservation of Mass

• Atomic Structure

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Give an example of a physical change and a chemical change.

• Melting ice and burning wood.

• Rusting iron and freezing water.

• Dissolving sugar and boiling water.

• Cutting paper and baking a cake.

Tags

NGSS.MS-PS1-2

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

• Mass is conserved.

• Mass is lost.

• Mass is gained.

• Mass is doubled.

Tags

NGSS.MS-PS1-5

How can you tell if a chemical reaction has occurred?

• New substances form.

• The substance changes color.

• The substance melts.

• The substance evaporates.

Tags

NGSS.MS-PS1-2

Explain how the Law of Conservation of Mass applies to a chemical reaction.

• Mass is neither created nor destroyed.

• Mass is created during the reaction.

• Mass is destroyed during the reaction.

• Mass is doubled during the reaction.

Tags

NGSS.MS-PS1-5