Chemical Reactions

Chemical Reactions

by Lauren Ayers

Multiple Choice

A chemical reaction that start releases energy into the environment (light, heat, sound...) is called a _________________ reaction

• exothermic

• endothermic

• reversable

• impossible

Multiple Choice

If the reactants have 

higher chemical energy than the products of the reaction do, it is an _________________ reaction

• exothermic

• endothermic

• reversible

• impossible

Multiple Choice

This graph show the progress of a(n) _________________ reaction

• exothermic

• endothermic

• reversible

• impossible

Multiple Choice

In an endothermic reaction the reactants have ____________ chemical energy than the products

• more

• less

• the same

Multiple Choice

In an endothermic reaction, energy must be _________________ for the reaction to proceed.

• released

• absorbed

• destroyed

Multiple Choice

Photosynthesis is an example of an

• exothermic reaction

• endothermic reaction

​Enzymes are Biological Catalysts that speed up the rate of chemical reactions by lowering activation energy