Ch. 2 Chem Review for BIO

Front

What is an electron?

Back

A particle with energy that moves around the nucleus of an atom.

Front

What determines if a molecule is polar or non-polar?

Back

The distribution of electrical charge across the molecule.

Front

What is the volume of an atom mostly composed of?

Back

Empty space where electrons are likely to be found.

Front

How many protons does an atom with atomic number 6 have?

Back

6 protons.

Front

What distinguishes carbon-12 from carbon-14?

Back

They have a different number of neutrons.

Front

Define atomic number.

Back

The number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is a neutron?

Back

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

Front

What is a proton?

Back

A positively charged subatomic particle found in the nucleus of an atom.

Front

What is the nucleus of an atom?

Back

The central part of an atom, containing protons and neutrons.

Front

What is the significance of valence electrons?

Back

They determine how an atom can bond with other atoms.