The Water Molecule and Dissolving

Front

What is a water molecule made of?

Back

A water molecule is made of two hydrogen atoms and one oxygen atom (H2O).

Front

What is the charge of a water molecule?

Back

A water molecule has a zero net charge because it has an equal number of electrons and protons.

Front

What does it mean for a substance to be soluble?

Back

A substance is soluble if it can be dissolved in a solvent, such as water.

Front

What is the term for the substance that is dissolved in a solution?

Back

The substance that is dissolved in a solution is called the solute.

Front

What is the term for the liquid in which a solute is dissolved?

Back

The liquid in which a solute is dissolved is called the solvent.

Front

Why is water considered a polar molecule?

Back

Water is considered a polar molecule because the oxygen atom attracts more than its 'fair share' of electrons, creating a partial negative charge near the oxygen and a partial positive charge near the hydrogen atoms.

Front

What is evaporation?

Back

Evaporation is a method of separating solutions where the solvent is turned into vapor, leaving the solute behind.

Front

What is the difference between a solute and a solvent?

Back

A solute is the substance that is dissolved, while a solvent is the substance that does the dissolving.

Front

What is a solution?

Back

A solution is a homogeneous mixture formed when a solute is dissolved in a solvent.

Front

What is concentration in a solution?

Back

Concentration refers to the amount of solute present in a given volume of solvent or solution.