Chemical Reactions

Front

What is evidence of a chemical reaction?

Back

Evidence of a chemical reaction is anything that shows a new substance has formed.

Front

What indicates a new substance has formed when mixing two clear liquids?

Back

A yellow solid forms and then settles to the bottom of the beaker.

Front

What happens to the temperature of a solution when hydrogen peroxide breaks down?

Back

The temperature of the solution increases.

Front

What does the Law of Conservation of Mass state?

Back

Mass is never created or destroyed.

Front

In the reaction 2Mg + O2 -> 2MgO, what are the reactants?

Back

Mg and O.

Front

What is a chemical reaction?

Back

A process that leads to the transformation of one set of chemical substances to another.

Front

What are products in a chemical reaction?

Back

The substances that are formed as a result of a chemical reaction.

Front

What is a catalyst?

Back

A substance that increases the rate of a chemical reaction without being consumed in the process.

Front

What is an exothermic reaction?

Back

A chemical reaction that releases energy in the form of heat.

Front

What is an endothermic reaction?

Back

A chemical reaction that absorbs energy from its surroundings.