Chapter 6 Section 3-4

Chapter 6 Section 3-4

Multiple Select

The minimum amount of energy needed to start a chemical reaction is called activation energy.

• activation energy

• innovation energy

Multiple Select

What is the amount of a substance in a given volume?

• maximation

• concentration

Multiple Select

Which reactions absorb heat and leave the products with more energy than the original reactants?

• exothermic

• endothermic

Multiple Select

Which reactions absorb heat and leave the products with more energy than the original reactants?

• exothermic

• endothermic

Multiple Select

Which reactions release heat and leave the products with less energy stored in them than the original reactants?

• exothermic

• endothermic

Multiple Choice

The minimum amount of energy needed to start a chemical reaction is called what?

• concentrated energy

• activation energy

• exothermic energy

• endothermic energy

Multiple Choice

What is the amount of a substance in a given volume?

• mass

• matter

• concentration

• acidity

Multiple Choice

What is a substance added to a reaction that speeds the rate of a reaction by lowering the activation energy?

• inhibitor

• catalyst

• speedometer

• jump starter

Multiple Choice

What is a thing in our bodies that is a catalyst?

• adrenalin

• enzymes

• appendix

• hormones

Multiple Choice

What is a substance that decreases the rate of reactions?

• catalyst

• blocker

• steamer

• inhibitor

Fill in the Blanks

Starting and maintaining a fire requires the following three things: fuel, oxygen, and heat. This called the

.

Multiple Choice

Which is not part of the fire triangle?

• hydogen

• heat

• fuel

• oxygen