Matter and Mixtures

What is the saturation point?

• When no more solute can be dissolved in a fixed volume of solvent at a specific temperature.

• The point at which a solution becomes too concentrated and begins to precipitate.

• The temperature at which a solvent can dissolve the maximum amount of solute.

• The stage where solute and solvent are in equal proportions.

Why do substances mix?

• Smaller particles fill spaces between larger ones.

• Some particles are more attracted to others.

• Substances mix only when heated.

• Mixing occurs due to the color of the substances.

How does temperature affect solubility in gases?

• As temperature increases, solubility increases.

• As temperature decreases, solubility decreases.

• As temperature increases, solubility decreases. Example: Cold water can hold more oxygen than warm water.

• Temperature has no effect on solubility.

What is a pure substance?

• Made up of only one kind of matter, cannot be separated.

• A mixture of different substances that can be separated.

• A substance that can exist in multiple states of matter.

• A compound that contains two or more elements.

What are the 3 factors affecting the rate of dissolving?

• Temperature, Size of the pieces, Stirring

• Pressure, Color of the solute, Size of the container

• Humidity, Type of solvent, Time

• Concentration, Shape of the solute, Light exposure

What is a dilute solution?

• A solution with a small amount of solute in the solvent (weak solution).

• A solution with a large amount of solute in the solvent (strong solution).

• A solution that has equal amounts of solute and solvent.

• A solution that contains no solute at all.

Define solute and solvent.

• Solute: The substance that does the dissolving (greater amount). Solvent: The substance that is dissolved (lesser amount).

• Solute: The substance that is dissolved (lesser amount). Solvent: The substance that does the dissolving (greater amount).

• Solute: A mixture of two or more substances. Solvent: A solid that dissolves in a liquid.

• Solute: The liquid in which a solid is dissolved. Solvent: The solid that is dissolved in a liquid.

What is an aqueous solution?

• A solution where water is the solvent.

• A solution where oil is the solvent.

• A solution that contains no solute.

• A solution that is always acidic.

What is a saturated solution?

• A solution where no more solute can dissolve in the solvent at a given temperature.

• A solution that contains more solute than can be dissolved.

• A solution that has a lower concentration of solute than the solvent can hold.

• A solution that is completely solid and cannot dissolve any more solute.

What is the particle theory of matter?

• All matter is made of tiny particles.

• Particles are always at rest and do not move.

• Particles are only found in solids and liquids.

• Particles have no spaces between them.