Substances and Mixtures

Front

Subatomic particles with a negative charge

Back

Electrons are subatomic particles that carry a negative charge and are found in the electron cloud surrounding the nucleus of an atom.

Front

Air is:

Back

A homogeneous mixture of gases, primarily nitrogen and oxygen, along with trace amounts of other gases.

Front

Subatomic particles with a positive charge

Back

Protons are subatomic particles that carry a positive charge and are located in the nucleus of an atom.

Front

Chex mix contains pretzels, rye chips, and chex cereal. It is an example of a(n)

Back

Heterogeneous mixture, as the components can be physically distinguished and are not uniformly distributed.

Front

A snow globe would be an example of a __________________.

Back

Suspension, as it contains larger particles that are suspended in a liquid and can settle over time.

Front

What is a mixture?

Back

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

Front

Define homogeneous mixture.

Back

A homogeneous mixture is a mixture that has a uniform composition and appearance throughout.

Front

Define heterogeneous mixture.

Back

A heterogeneous mixture is a mixture where the components are not uniformly distributed and can be easily distinguished.

Front

What is a solution?

Back

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

Front

What is a colloid?

Back

A colloid is a mixture where very small particles of one substance are evenly distributed throughout another substance.