Unit 1 Atomic Structure

Front

What is the atomic structure of an atom?

Back

An atom consists of a nucleus containing protons and neutrons, surrounded by electrons in orbitals.

Front

What is the charge of a proton?

Back

A proton has a positive charge of +1.

Front

What is the charge of an electron?

Back

An electron has a negative charge of -1.

Front

What is the charge of a neutron?

Back

A neutron has no charge (neutral).

Front

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

Back

Number of neutrons = Atomic mass - Atomic number.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is the difference between Carbon-12 and Carbon-14?

Back

Carbon-12 and Carbon-14 differ in atomic mass due to the number of neutrons; Carbon-12 has 6 neutrons, while Carbon-14 has 8.

Front

What is the nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons, and it carries a positive charge.

Front

What is an ion?

Back

An ion is an atom or molecule that has gained or lost one or more electrons, resulting in a net charge.

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in the nucleus of an atom.