FINAL Review 2025

For an exothermic reaction, the heat is on the ____ side

• reactant
• product
• either side

For an endothermic reaction, the heat is on the ____ side.

• reactant
• product
• either side

Tags

NGSS.HS-PS1-4

Exothermic reaction:

• delta H is positive
• delta H is negative
• delta H is zero

Tags

NGSS.HS-PS1-4

_____ reactions usually feel hot!

• endothermic

• exothermic

Tags

NGSS.HS-PS1-4

____ reactions usually feel cold.

• endothermic

• exothermic

Tags

NGSS.HS-PS1-4

State whether the following compound is soluble or insoluble.  calcium carbonate CaCO₃ 

• soluble
• insoluble

State whether the following compound is soluble or insoluble. potassiun bromide KBr

• Soluble
• Insoluble

What is the precipitate of this reaction?

*must be an insoluble product

MgCl₂ + 2 NaOH --> Mg(OH)₂ + 2 NaCl

• MgCl₂

• NaOH

• Mg(OH)₂

• NaCl

Identify the precipitate in the reaction:

*must be an insoluble product

CdSO₄ + K₂S → CdS + K₂SO₄

• CdSO₄

• K₂S

• CdS

• K₂SO₄

If pressure goes down in a container, what happens to volume when the temperature is held constant.

• Increase

• Decrease