6th grade chemistry review

Front

What is a metalloid?

Back

A metalloid is an element that has properties of both metals and nonmetals. They can be shiny or dull.

Front

What type of change occurs when salt dissolves in water?

Back

Physical change.

Front

Is rusting a chemical or physical change?

Back

Chemical change.

Front

What is an element?

Back

An element is a pure substance that cannot be separated into simpler substances by physical or chemical means.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded.

Front

What is a pure substance?

Back

A pure substance is a material that has a constant composition and consistent properties throughout.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

Can elements be broken down into simpler substances?

Back

No, elements cannot be broken down into simpler substances.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change.