Chemical Changes Review

Front

The formation of a solid during a chemical reaction.

Back

precipitate

Front

A chemical reaction involving oxygen that usually gives off heat and/or light.

Back

combustion

Front

Another name for a state of matter change such as a solid becoming a liquid

Back

phase change

Front

When two or more molecules interact and change into a new substance.

Back

chemical reaction

Front

a change in form or appearance of a substance that does not result in a new substance

Back

physical change

Front

What type of change occurs when you dissolve sugar in water? Use scientific reasoning to support your answer.

Back

A physical change occurs. When sugar is mixed with water, the sugar dissolves in the water, but no new substances are created.

Front

What type of change occurs when you bake a cake with flour, water, sugar, and other ingredients?

Back

A chemical change occurs. The evidence occurs when the combined ingredients are changed into a new substance when baked at a high temperature.