Unit 1: Solutions

A solution is a kind of mixture where one substance (solute) is dissolved in another (solvent).

Water is known as the universal solvent because it can dissolve more substances than any other liquid.

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

The solvent is the substance that dissolves the solute in a solution.

Crystals can form when liquids cool and start to harden, when magma cools, or when water evaporates from a mixture.

A control group is a variable that does not change during an experiment, used for comparison.

A mixture is a combination of two or more substances that retain their individual properties, while a compound is a substance formed when two or more elements chemically bond.

When a solute is added to a solvent, it dissolves, resulting in a homogeneous mixture called a solution.

Saturation occurs when a solution can no longer dissolve additional solute at a given temperature and pressure.

Dissolving is the process where solute particles are surrounded by solvent molecules and separated from each other.