Atoms and Atomic Structure Review

Front

What is the atomic number?

Back

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

Front

What is the mass number?

Back

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

Front

How many electrons are in an electrically neutral atom of boron?

Back

An electrically neutral atom of boron has 5 electrons.

Front

What do all atoms of a given element have in common?

Back

All atoms of a given element have the same number of protons.

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What are protons?

Back

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

Front

What are neutrons?

Back

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

Front

What are electrons?

Back

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

Front

What is the nucleus of an atom?

Back

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

Front

What is the difference between atomic number and mass number?

Back

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