Chemistry Final Review

Front

What is the smallest particle of an atom?

Back

Electron

Front

Which coefficients correctly balance the formula equation NH₄NO₂(s) → N₂(g) + H₂O(l)?

Back

1 1 2

Front

A _______ is a neutral group of atoms that are held together by covalent bonds.

Back

Molecule

Front

What is an isotope?

Back

An atom with different amounts of neutrons.

Front

How many valence electrons are represented here? (5)

Back

5

Front

What is the definition of a compound?

Back

A substance formed when two or more elements chemically bond together.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the difference between an ionic bond and a covalent bond?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

What is the pH scale used for?

Back

To measure the acidity or basicity of a solution.

Front

What is a chemical reaction?

Back

A process that involves the rearrangement of the molecular or ionic structure of a substance.