Homework

Front

What is Chemical Change?

Back

Changes when substances that make up an object have been changed into another substance.

Front

In reaction A + B --> C, if reactants A + B have a total mass of 9g, what is the mass of product C?

Back

9g

Front

What is the formation of a solid when two liquids combine called?

Back

Precipitate

Front

Can you always see Chemical Change?

Back

No

Front

Most chemical changes cannot be reversed. True or False?

Back

True

Front

What is a physical change?

Back

A change that happens when matter changes size, shape or form but not the substance.

Front

What is the Law of Conservation of Mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What is an example of a chemical change?

Back

Burning wood.

Front

What is an example of a physical change?

Back

Melting ice.

Front

What is a reactant?

Back

A substance that is present at the start of a chemical reaction.