Subatomic Particles

Front

What is the atomic mass of an element?

Back

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

Front

How many protons does an element with atomic number 118 have?

Back

An element with atomic number 118 has 118 protons.

Front

What is the nucleus of an atom?

Back

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

Front

How many protons are in Magnesium (Mg) and Carbon (C) combined?

Back

Magnesium has 12 protons and Carbon has 6 protons, so combined they have 18 protons.

Front

How many electrons does an atom with 6 protons have?

Back

An atom with 6 protons has 6 electrons, assuming it is neutral.

Front

What are protons?

Back

Protons are positively charged subatomic particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutrons are neutral subatomic particles found in the nucleus of an atom.

Front

What are electrons?

Back

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

Front

What is the mass number of an element?

Back

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

Front

What is the charge of a proton?

Back

The charge of a proton is +1.