Quiz About Homogeneous Mixtures

Water (H2O) is the most common solvent on Earth. Solutes are dissolved in solvents.
Water is the "universal solvent".

Solutions are defined as homogeneous mixtures. All of the particles are evenly distributed throughout the mixture. Solutions are usually made of liquids but can also be gases, solids, and gases dissolved in liquids.

Colloids are a special type of solution with very small particles suspended within the solvent. Colloid solutions are also called colloidal dispersions.

As the pressure of a system increases, it is easier to dissolve more gases into a liquid. Pressure forces more of the gas molecules into the solvent.

All of the factors can affect the concentration of solutes dissolved in the solvent. Solubility is a characteristic of the solvent. Temperature and pressure are outside influences.

All of the available choices are solutions. The tricky one might have been the gold choice. 14-karat gold is actually made with multiple metals. The metals are mixed in solutions at very high temperatures. When they cool to a solid form, the solid is defined as a solid solution. Most metal alloys begin their lives as solutions.

Scientists believe that electrical charges hold the small particles in solution. You may find very small pieces of clay suspended in water that never settle. Clay remains suspended because of the electrical attractions between the water molecules.