Apologia Physical Science Study Guide Module 4

Front

What are valence electrons?

Back

Electrons on the outermost energy ring of a Bohr model of a molecule.

Front

What is cohesion?

Back

The force of attraction between molecules of the same substance that causes them to stay together.

Front

What causes surface tension?

Back

Cohesion.

Front

Which has more molecules: 1 liter of water or 1 liter of ice?

Back

Water (liquid) has more molecules.

Front

What is a polar molecule?

Back

A molecule that has slight positive and negative charges due to an imbalance in the way electrons are shared.

Front

What is adhesion?

Back

The force of attraction between molecules of different substances.

Front

Define a molecule.

Back

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

Front

What is the difference between reactants and products?

Back

Reactants are substances that undergo a chemical change, while products are the substances formed as a result of that change.

Front

What is an ionic bond?

Back

A type of chemical bond that involves the electrostatic attraction between oppositely charged ions.

Front

What is the significance of the outermost energy level in an atom?

Back

It determines the atom's chemical properties and its ability to bond with other atoms.