ECM Flashcard Review

Front

What is a pure substance?

Back

A material that has a constant composition and consistent properties throughout. Examples include elements and compounds.

Front

What is a compound?

Back

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

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically bonded and can be separated by physical means.

Front

What is a homogeneous mixture?

Back

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

Front

What is a heterogeneous mixture?

Back

A mixture that has a non-uniform composition, where the different components can be seen, such as salad or soil.

Front

What is an element?

Back

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

Front

What is a solution?

Back

A homogeneous mixture where one substance (the solute) is dissolved in another (the solvent).

Front

What is the difference between a compound and a mixture?

Back

A compound is formed by chemical bonding of elements, while a mixture is a physical combination of substances.

Front

What is the significance of a magnet in separating mixtures?

Back

A magnet can be used to separate magnetic materials from non-magnetic materials in a mixture.

Front

What is an example of a homogeneous mixture?

Back

Nitrogen gas and oxygen gas mixed together.