6-Chemistry in Biology

Front

What is the building block of matter?

Back

Atom

Front

True or False: Water (H2O) is an example of an element from the periodic table.

Back

False

Front

What is a compound?

Back

A pure substance formed when two or more different elements combine.

Front

C-12, C-13, and C-14 are _________________ of each other.

Back

Isotopes

Front

What is a polar molecule?

Back

Molecules that have an uneven distribution of charge and have oppositely charged regions.

Front

What is the center of an atom called?

Back

Nucleus, which contains neutrons and protons.

Front

What is an ion?

Back

An atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down into simpler substances, while a compound is made up of two or more different elements chemically bonded together.

Front

What is the pH scale used for?

Back

To measure the acidity or basicity of a solution.

Front

What is a solution?

Back

A homogeneous mixture of two or more substances.