Atomic Structure

Front

How is the number of neutrons in the nucleus of an atom calculated?

Back

Subtract the number of protons (p+) from the mass number.

Front

What is the atomic number?

Back

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

Front

If an atom has 12 positively charged subatomic particles, how many electrons must it have to be neutral?

Back

12 electrons.

Front

Which subatomic particles contribute the most to the mass of an atom?

Back

Protons and Neutrons.

Front

What is the mass number?

Back

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

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 relationship between atomic number and mass number?

Back

The mass number is the sum of protons and neutrons, while the atomic number is just the number of protons.

Front

How do you determine the charge of an atom?

Back

The charge of an atom is determined by the difference between the number of protons and electrons.