Controlling Chemical Reactions

The __________ energy is the minimum amount of energy needed to start a reaction.

All chemical reactions need a certain amount of activation energy to get started

• True

• False

How can you determine whether a reaction still needs more energy from the environment once it has started?

Tags

NGSS.HS-PS1-4

A reaction that releases more energy than it uses

• Endothermic

• Exothermic

Tags

NGSS.HS-PS1-4

Give an example of an exothermic reaction

Tags

NGSS.HS-PS1-4

Endothermic reactions need energy to get started

• True

• False

What must you do if you want a reaction to happen faster or to slow down?

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

Factors that change the rates of reactions include

• surface area

• temperature

• concentration

• fuel

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

What occurs when you increase the temperature of a reaction? (List the steps)

Tags

NGSS.HS-PS1-5

Changing the surface area of a reaction can have positive and negative impacts on the reaction and could potentially be dangerous

• True

• False