Catalysts

What does catalyst do to a reaction?

• Slows down the reaction

• Nothing changes

• Speeds up the reaction

Tags

NGSS.HS-PS1-5

What happen to the rate of reaction when a catalyst is added to it?

• Increases

• Decreases

• Nothing changes

Tags

NGSS.HS-PS1-5

How does a catalyst work in speeding up a reaction?

• By lowering the activation energy or reaction

• by making them more available

• by giving them more energy

A ______________ is a substance that increases the rate of a reaction without being used up during the reaction.

• catalyst

• reactant

• product

• solute

Tags

NGSS.HS-PS1-5

Catalysts may be in the state of ___________.

• Solid and liquid only

• Liquid and gases only

• Solid and gases only

• Solid, liquid or gases

What is the name given to a catalyst in the human body?

• Saliva

• Lipid

• Enzyme

• Catalyst

Enzymes in your body probably work best at which of the following temperatures>

• 25^oC

• 37^oC

• 98^oC

• 100^oC

A catalyst increases the efficiency of collisions between reactants.

• true

• false

Tags

NGSS.HS-PS1-5

Catalysts permit reactions to proceed along a ___________energy path.

• lower

• higher

Tags

NGSS.HS-PS1-4

A catalyst increases the efficiency of collisions between reactants.

• true

• false

Tags

NGSS.HS-PS1-5