Protons, Neutrons, & Electrons

Front

What are protons?

Back

Protons are positively charged subatomic particles found in the nucleus of an atom. They determine the atomic number of an element.

Front

What are neutrons?

Back

Neutrons are neutral subatomic particles found in the nucleus of an atom. They contribute to the mass of the atom but do not affect its charge.

Front

What are electrons?

Back

Electrons are negatively charged subatomic particles that orbit the nucleus of an atom. They are involved in chemical bonding and reactions.

Front

What is the atomic number?

Back

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

Front

What is the mass number?

Back

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

Front

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

Back

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

Front

What is the symbol for an element?

Back

The symbol for an element is a one or two-letter abbreviation derived from its name, such as 'H' for hydrogen or 'O' for oxygen.

Front

How many protons are in magnesium?

Back

Magnesium has 12 protons.

Front

How many neutrons are in beryllium?

Back

Beryllium has 5 neutrons.

Front

How many electrons are in potassium?

Back

Potassium has 19 electrons.