Pure Substances and Mixtures Flashcard

Front

What happens when a liquid freezes?

Back

The particles lose kinetic energy and turn into a solid.

Front

What kind of mixture is this? All parts of the mixture are visible because they do not mix together.

Back

Heterogeneous.

Front

What is a physical property?

Back

A property that we can measure or observe with our 5 senses or other tools.

Front

The energy of motion is called ___________.

Back

Kinetic energy.

Front

This is a water molecule. It is a ________.

Back

Compound.

Front

What is a pure substance?

Back

A material made of only one type of particle, having a uniform and definite composition.

Front

What is a mixture?

Back

A combination of two or more substances where each retains its own properties.

Front

What is a homogeneous mixture?

Back

A mixture in which the composition is uniform throughout.

Front

What is a heterogeneous mixture?

Back

A mixture in which the components are not uniform and can be easily distinguished.

Front

What is an element?

Back

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