Chemical Reactions

Front

What are tiny pieces of matter that everything is made of?

Back

Atoms are the basic building blocks of matter.

Front

What happens to a substance during a chemical reaction?

Back

A substance can be rearranged to form a new substance.

Front

What is an object, diagram, or computer program that helps us understand something by making it simpler or easier to see?

Back

A model is used to represent and simplify complex concepts.

Front

What is the process in which parts of matter rearrange to form new substances?

Back

A chemical reaction is the process of rearranging atoms to create new substances.

Front

Which of these most likely represents a chemical change: water boiling, sugars digested by saliva, mud drying to dirt, or ice cream melting?

Back

Sugars digested by saliva represent a chemical change.

Front

What is a chemical reaction?

Back

A chemical reaction is 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

The law states that mass is neither created nor destroyed in a chemical reaction.

Front

What is a reactant in a chemical reaction?

Back

A reactant is a substance that takes part in and undergoes change during a reaction.

Front

What is a product in a chemical reaction?

Back

A product is a substance that is formed as a result of a chemical reaction.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change.