Reaction profile diagrams

Does this show an endothermic or an exothermic reaction?

• Endothermic

• Exothermic

Tags

NGSS.HS-PS1-4

In an endothermic reaction...

• heat is released

• heat is absorbed

Tags

NGSS.HS-PS1-4

In an exothermic reaction...

• heat is released

• heat is absorbed

Tags

NGSS.HS-PS1-4

Is this showing an endothermic or an exothermic reaction?

• Endothermic

• Exothermic

Tags

NGSS.HS-PS1-4

In an endothermic reaction...

• products have more energy than reactants

• reactants have more energy than products

Tags

NGSS.HS-PS1-4

Collisions that result in the formation of products are called _______________ collisions

Tags

NGSS.HS-PS1-5

Increasing the temperature in a reaction lowers the activation energy.

• True

• False

Tags

NGSS.HS-PS1-5

Increasing the temperature increases the number of collisions and therefore the number of effective collisions.

• True

• False

Tags

NGSS.HS-PS1-5

Increasing the concentration increases the number of collisions and therefore the number of effective collisions.

• True

• False

Tags

NGSS.HS-PS1-5

Catalysts increase the reaction rate by lowering the activation energy

• True

• False