Chemistry Exam Review

Front

What is an atom made of?

Back

An atom consists of protons, neutrons, and electrons.

Front

What is the chemical formula for the compound formed by aluminum and oxygen?

Back

The chemical formula is Al₂O₃.

Front

Which group does beryllium belong to on the periodic table?

Back

Beryllium is located in the alkaline earth metals group.

Front

How did Dmitri Mendeleev organize his periodic table?

Back

He organized it in order of increasing atomic mass.

Front

Which element has a larger atomic radius: Beryllium or Fluorine?

Back

Beryllium has a larger atomic radius than Fluorine.

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

What is the charge of a neutron?

Back

A neutron has no charge (neutral).

Front

What is the significance of the atomic number?

Back

The atomic number indicates the number of protons in an atom and defines the element.

Front

What is a chemical bond?

Back

A chemical bond is the force that holds atoms together in a compound.