Unit 2 Practice Test

Front

How are covalent bonds formed?

Back

Covalent bonds are formed by the sharing of electrons between atoms.

Front

Where are valence electrons found?

Back

Valence electrons are found in the outermost energy levels of an atom.

Front

Which subatomic particle has a positive charge?

Back

The proton has a positive charge.

Front

What are rows on the periodic table called?

Back

Rows on the periodic table are called periods.

Front

How many neutrons are in one atom of Carbon?

Back

One atom of Carbon has 6 neutrons.

Front

What is the charge of an electron?

Back

The charge of an electron is negative.

Front

What is the atomic number of an element?

Back

The atomic number of an element is the number of protons in its nucleus.

Front

What is the difference between ionic and covalent bonds?

Back

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

Front

What is a molecule?

Back

A molecule is a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound.

Front

What is the role of neutrons in an atom?

Back

Neutrons help stabilize the nucleus of an atom and contribute to its mass.