PS.8.1.1 Construct an explanation to classify matter as elements

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a chemical change?

Back

A process where one or more substances are transformed into new substances with different properties.

Front

Give an example of a chemical change.

Back

Digesting food.

Front

What happens to particles in an object at higher temperatures?

Back

Particles in an object move faster.

Front

What is a heterogeneous mixture?

Back

A mixture where the components are not uniformly distributed, such as chicken noodle soup.

Front

What is a homogeneous mixture?

Back

A mixture that has a uniform composition throughout, such as saltwater.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

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

Back

A chemical change results in the formation of new substances, while a physical change does not.

Front

What is a compound?

Back

A substance formed when two or more elements chemically bond together.