Front

Acid pH

Back

A substance with a pH of less than 7.

Front

Atom

Back

The basic unit of matter consisting of a dense nucleus and an electron cloud.

Front

Base pH

Back

A substance that has a pH greater than 7.

Front

Chemical Change

Back

Occurs when one substance changes into another because chemical bonds are broken and new bonds are formed.

Front

Density

Back

How compact or close together the particles of a substance are.

Front

Density Comparison

Back

Oil represents low density, while honey represents high density.

Front

Group

Back

A column on the periodic table where elements have similar properties.

Front

Heterogeneous mixture

Back

Mixtures where different parts are

clearly observable.

Front

Tossed salad as a mixture

Including: lettuce, tomatoes, olives, cheese

Back

Example of a heterogeneous mixture

Front

Homogeneous Mixture

Back

Mixtures that have very well-blended parts.

Example: Blood cells