Atoms and the Periodic Table

Front

What is the basic unit of matter?

Back

An atom.

Front

What are the three main subatomic particles in an atom?

Back

Protons, neutrons, and electrons.

Front

What charge does a proton carry?

Back

Positive charge.

Front

What charge does a neutron carry?

Back

No charge (neutral).

Front

What charge does an electron carry?

Back

Negative charge.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is an ionic bond?

Back

A chemical bond formed between two ions with opposite charges.

Front

Which group of elements is known for being highly reactive metals?

Back

Alkali metals (Group 1).

Front

What is a valence electron?

Back

An electron in the outermost shell of an atom that can participate in chemical bonding.

Front

Why do elements in the same group of the periodic table have similar properties?

Back

They have the same number of valence electrons.