Biology: Chemistry Review

Front

What subatomic particle is found in the space surrounding the nucleus of an atom?

Back

Electrons are the subatomic particles that orbit the nucleus of an atom.

Front

What is the total number of protons in an element with an atomic number of 3?

Back

The total number of protons is 3, as the atomic number represents the number of protons in an atom.

Front

What is formed when two or more elements are joined chemically?

Back

A compound is formed when two or more elements are chemically bonded together.

Front

Which subatomic particle has a positive charge?

Back

Protons are the subatomic particles that carry a positive charge.

Front

Which subatomic particle has a neutral charge?

Back

Neutrons are the subatomic particles that have no charge.

Front

What is the charge of an electron?

Back

Electrons have a negative charge.

Front

What is the atomic mass of an element?

Back

The atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is the nucleus of an atom?

Back

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

Front

How do you determine the number of neutrons in an atom?

Back

To find the number of neutrons, subtract the atomic number from the atomic mass.