Atoms and the Periodic Table

Front

What identifies an element?

Back

An element is identified by its number of protons.

Front

What charge does an electron have?

Back

An electron has a negative charge.

Front

What does the number 1.00794 represent in chemistry?

Back

The number 1.00794 represents the atomic mass.

Front

How many electrons are in a Potassium (K) atom?

Back

Potassium (K) has 19 electrons.

Front

What is all matter made of?

Back

All matter is made of atoms.

Front

What is the atomic number of an element?

Back

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

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of a neutron?

Back

A neutron has a neutral charge.

Front

What is the periodic table?

Back

The periodic table is a chart that organizes all known elements by their atomic number, electron configuration, and recurring chemical properties.

Front

What is an isotope?

Back

An isotope is a variant of an element that has the same number of protons but a different number of neutrons.