Atoms and Periodic Table

Front

What is the charge of an electron?

Back

Electrons have a negative charge.

Front

What element is located at group 5, period 6 of the periodic table?

Back

The element is Molybdenum (Mo).

Front

Which subatomic particle has no charge?

Back

The neutron has no charge.

Front

How many electrons can the second energy level hold?

Back

The second energy level can hold 8 electrons.

Front

What are electrons in the outermost energy level called?

Back

They are called valence electrons.

Front

What is an atom?

Back

An atom is the basic unit of a chemical element, consisting of protons, neutrons, and electrons.

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 periodic table?

Back

The periodic table is a tabular arrangement of chemical elements, organized by their atomic number.

Front

What are protons?

Back

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

Front

What is a chemical element?

Back

A chemical element is a pure substance that cannot be broken down into simpler substances by chemical means.