Chemical Reactions and Kinetics

In an exothermic reaction, heat is ...

• taken in
• given out

Tags

NGSS.HS-PS1-4

A chemical reaction that requires energy is a

• exothermic reaction 
• endothermic reaction 
• over reaction 

Tags

NGSS.HS-PS1-4

To slow down a chemical reaction you will do one of the following:

• Place the reactants in hot water
• Place the products in ice bath
• Place the reactants in a ice bath
• Keep stirring the reactants with a stirring rod

Tags

NGSS.HS-PS1-5

What kind of reaction is this?

• Endothermic
• Exothermic
• Cannot be determined

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

Which letter corresponds to the activation energy of the forward reaction?

• A
• B
• C
• D

Tags

NGSS.HS-PS1-4

Which factors increase the rate of a reaction.

• increasing temperature
• increasing concentration
• increasing surface area
• all of these

Tags

NGSS.HS-PS1-5

Which of the options below does NOT affect the rate of a reaction? 

• Concentration
• Temperature
• Time
• Catalyst

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

The rate of a reaction increases as temperature__________________.

• Decreases
• Increases
• Stays the Same

Tags

NGSS.HS-PS1-5

Which picture shows how a catalyst would change the rate? 

• Option 3
• Option 2
• Option 1

Adding a catalyst to a chemical reaction changes the rate of reaction by causing

• a decrease in the activation energy
• an increase in the activation energy
• a decrease in the heat of reaction
• an increase in the heat of reaction