Biology: Chemistry of life

Front

What is the charge of a proton?

Back

Positive charge.

Front

What are isotopes?

Back

Atoms of the same element that have different numbers of neutrons.

Front

What is a compound?

Back

Two or more elements that are chemically bonded together.

Front

What is a radioactive isotope?

Back

An isotope that is unstable and can emit radiation, used in cancer treatment and food pasteurization.

Front

What pH range indicates an acid?

Back

1-6 on the pH scale.

Front

What is the charge of an electron?

Back

Negative charge.

Front

What is a neutron?

Back

A subatomic particle with no charge, found in the nucleus of an atom.

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom, defining the element.

Front

What is a covalent bond?

Back

A chemical bond formed when two atoms share electrons.

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.