ICP Unit 5 Chemical Reactions

Front

What happens in ALL chemical changes?

Back

A new substance is formed.

Front

What does a pH of 1 indicate about a liquid?

Back

It is a strong acid.

Front

Which type of ion does a base produce when it is dissolved in water?

Back

Hydroxide.

Front

What type of reaction is represented by the equation 4Si + S8 --> 2Si2S4?

Back

Synthesis.

Front

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

Back

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

Front

Define a chemical reaction.

Back

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

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.

Front

What is an exothermic reaction?

Back

A reaction that releases energy in the form of heat.

Front

What is an endothermic reaction?

Back

A reaction that absorbs energy from its surroundings.

Front

What is a reactant?

Back

A substance that undergoes change in a chemical reaction.