Unit 2 part 2 Test AC

Front

What two elements make up water?

Back

Hydrogen and oxygen.

Front

What part of a molecule of salt can carry a charge when dissolved in water?

Back

Only Na⁺.

Front

Electricity is the flow of _____

Back

Electrons.

Front

Why is water considered a universal solvent?

Back

It dissolves most substances.

Front

What attracts the positive hydrogen of one water molecule to the negative oxygen of another?

Back

Hydrogen bonding.

Front

What is the chemical formula for water?

Back

H₂O.

Front

What is the charge of a sodium ion (Na)?

Back

Na⁺ (positive charge).

Front

What is the charge of a chloride ion (Cl)?

Back

Cl⁻ (negative charge).

Front

What is the process called when a solid dissolves in a liquid?

Back

Dissolution.

Front

What type of bond holds the hydrogen and oxygen atoms in a water molecule together?

Back

Covalent bond.