Unit 5 Concept 1 Balancing Chemical Equations

Multiple Choice

The reactants in an equations are ________?

• The ingredients

• The end result

Multiple Choice

The products in a reaction are ________?

• The ingredients

• The end result

Multiple Choice

In a chemical equation, coefficients tell you what?

• The number of each substance needed

• The number of each atom needed

• The number of electrons

• The number of protons

Multiple Choice

The Law of Conservation of Matter states that

• Matter can be created destroyed

• Matter can not be created or destroyed

• Matter can be created but not destroyed

• Matter can not be created but can be destroyed

Multiple Choice

What numbers can be changed when balancing a chemical equation?

• Coefficients

• Subscripts

• Coefficients & Subscripts

• Neither

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Multiple Choice

You mix 2 chemicals together and the solution lights up.

Did a chemical change occur?

• Yes

• No

Multiple Choice

You heat up a liquid and steam comes off of the top.

Did a chemical change occur?

• Yes

• No

Multiple Choice

You mix 2 chemicals together and a colored gas appears.

Did a chemical change occur?

• Yes

• No

Multiple Choice

You mix twist a cold pack and it becomes cold.

Did a chemical change occur?

• Yes

• No

Multiple Choice

You put a bottle of pop in the freezer and it gets cold

Did a chemical change occur?

• Yes

• No

Multiple Choice

A chemical reaction occurs and the product feels warm to the touch.

Was it endothermic or exothermic?

• Endothermic

• Exothermic

Multiple Choice

A chemical reaction occurs and the product feels cool to the touch.

Was it endothermic or exothermic?

• Endothermic

• Exothermic