Conservation of Matter

Front

What is the law of conservation of matter?

Back

The law of conservation of matter states that matter cannot be created or destroyed in a closed system; it can only change forms.

Front

What is matter?

Back

Anything that has weight and takes up space.

Front

If you have 250 grams of a mixture and you separate it into 150 grams of sand and iron, what is the mass of the iron?

Back

100 grams.

Front

What are the three main particles that make up an atom?

Back

Protons, neutrons, and electrons.

Front

What is a solution?

Back

A solution is a mixture where two or more pieces of matter are combined but not easily separated.

Front

What is the mass of an object made from 400 grams of clay?

Back

The mass remains 400 grams regardless of its shape.

Front

What happens to the mass of matter when it changes state (e.g., solid to liquid)?

Back

The mass remains the same; it is conserved.

Front

What is a physical change?

Back

A physical change is a change in the form or appearance of matter without changing its composition.

Front

What is a chemical change?

Back

A chemical change occurs when substances combine or break apart to form new substances.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that can be separated by physical means.