Unit 1 Chemical Reactions Review

A chemical reaction that absorbs heat.

• Endothermic

• Exothermic

• Catalyst

• Inhibitor

Tags

NGSS.HS-PS1-4

A chemical reaction that releases heat.

• Exothermic

• Endothermic

• Catalyst

• Inhibitor

Tags

NGSS.MS-PS1-4

Substances that form in a chemical reaction.

• Reactants

• Products

• Producers

• Reactions

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The original substances in a chemical reaction.

• Products

• Reactants

• Yields

• Elements

_____________ changes do not change the substance into something different.

• Chemical

• Physical

• Both chemical and physical

______________ changes will change the substance into something with different properties.

• Physical

• Chemical

• Both chemical and physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

A force that holds atoms together.

• molecules

• physical bond

• chemical bond

• compounds

The building blocks of matter are ________________.

• elements

• atoms

• molecules

• compounds

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Look at the diagram to see if the chemical reaction shown models the Law of Conservation of Matter.

• Yes

• No

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How many hydrogen atoms are found on the reactant side of the chemical equation shown?

• 3

• 6

• 8

• 2

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5