Atoms and the Periodic Table

Front

What are atoms of the same element with different numbers of neutrons called?

Back

Isotopes are atoms of the same element that have the same number of protons but different numbers of neutrons.

Front

What is the atomic number of copper (Cu)?

Back

The atomic number of copper (Cu) is 29, which indicates it has 29 protons.

Front

If an atom has equal numbers of protons and electrons, what is it called?

Back

An atom with equal numbers of protons and electrons is called neutral.

Front

Which subatomic particle has a positive charge?

Back

The proton is the subatomic particle that has a positive charge.

Front

What atom has 9 electrons?

Back

Fluorine is the atom that has 9 electrons.

Front

What is an atom?

Back

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

Front

What are the three main subatomic particles?

Back

The three main subatomic particles are protons, neutrons, and electrons.

Front

What is the charge of a neutron?

Back

A neutron has no charge; it is neutral.

Front

What does the atomic number represent?

Back

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

Front

What is the mass number of an atom?

Back

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