Pure Substances and Mixtures Flashcard

Front

A pure substance ________ be broken down into simpler matter using physical methods.

Back

can not

Front

This is a water molecule. It is a ________.

Back

Compound

Front

What happens when a liquid freezes?

Back

The particles lose kinetic energy and turn into a solid.

Front

Gas particles......

Back

are spread apart, moving fast, and change volume very easily.

Front

Homogeneous mixtures are also called _______.

Back

Solutions.

Front

What is a pure substance?

Back

A material that has a constant composition and cannot be separated into simpler substances by physical means.

Front

What is a mixture?

Back

A combination of two or more substances that retain their individual properties.

Front

What is the difference between a homogeneous mixture and a heterogeneous mixture?

Back

A homogeneous mixture has a uniform composition, while a heterogeneous mixture has a non-uniform composition.

Front

Give an example of a compound.

Back

Water (H2O) is a compound made of hydrogen and oxygen.

Front

What happens to particles in a solid?

Back

They are tightly packed and vibrate in place.