Solutions

• A solution is a mixture of solvent and solute.
• When you add a solid (solute) to a liquid (solvent) the bonds holding the solute molecules together sometimes break and the molecules then mix with the molecules in the liquid - forming a solution. This is called dissolving.
• Solution - is a mixture of a solute and a solvent that does not separate out.
• Solute - is the substance being dissolved.
• Solvent - is the liquid it's dissolving into.
• Saturated solution - a solution where the maximum amount of solute has been dissolved, so no more solute will be dissolved in the solution.
• The ability of a substance to dissolve in a solvent is known as its solubility.
• Solubility is often measured in grams of solute per 100 grams of solvent.
• Example: if 23 grams of a substance can dissolve in 100 grams of water before the water becomes saturated, that substance has a solubility of 23 g per 100 g of water.
• The solubility of most solid substances increases as you increase the temperature.
• A graph of solubility versus temperature is known as a solubility curve.
• You can use solubility curves to see the solubility of a substance at a specific temperature.