Atomic Structure

Front

Subatomic particles with a positive charge

Back

Protons are subatomic particles found in the nucleus of an atom, carrying a positive electrical charge.

Front

Measure mainly of the nuclear particles: protons + neutrons

Back

Atomic Mass is the total mass of an atom, primarily determined by the number of protons and neutrons in its nucleus.

Front

Atoms of the same element must always have the same number of _________

Back

Protons. The number of protons defines the element and its position in the periodic table.

Front

How many neutrons does a sodium atom have? (Use the image to help you)

Back

A sodium atom has 12 neutrons.

Front

Atoms of the same element with a different number of neutrons

Back

Isotopes are variants of a particular chemical element which differ in neutron number, and consequently in nucleon 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, which determines the element's identity.

Front

What are neutrons?

Back

Neutrons are neutral subatomic particles found in the nucleus of an atom, contributing to the atomic mass.

Front

What is an ion?

Back

An ion is 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 atom and a molecule?

Back

An atom is the smallest unit of an element, while a molecule is a group of two or more atoms bonded together.

Front

What is the role of electrons in an atom?

Back

Electrons are negatively charged subatomic particles that orbit the nucleus and are involved in chemical bonding.