Science 7 Notes 13 Solution Solubility Can you calculate the Solute saturation point for a solute in Solvent solution? Saturated Unsaturated Solution – a homogeneous mixture of very small particles What is a solution? the mixture does not separate out by letting it stand or by filtering the particles are evenly spread out Why isn’t water a solution? Tap water is a solution. Pure water is not a solution….. What are the parts of a … Because Solutions are mixtures. solution? There are 2 parts to a solution: Which do you 1. Solute – the part that gets dissolved add more of.. solute or solvent? 2. Solvent – the part that does the dissolving. There is more of the solvent. Why is water called the Water is called the “universal solvent” because it dissolves so many things. universal solvent? If you have a solution, you have a solute with some degree of solubility 1. What is solubility? What does it Solubility is the property that substances have of dissolving in mean for something to solvents, such as the solubility of salt in water. have solubility? How can you What is meant by the solubility of a material in water? measure solubility of a How much of the material dissolves in the water. substance in water? 1 Science 7 Notes 13 Only a certain amount of solute can be dissolved in a certain amount of When is a solvent at a certain temperature and pressure. solution saturated? When you can’t get any more solute to dissolve we call it a saturated solution. When does a solution form a When it could hold more solute we call it an unsaturated solution. precipitate? When a saturated solution is cooled, some solute must come out of Practice Using solution. We call this precipitation. the Solubility Curve: 1) With 45 Solubility Curves: grams of ** A WAY TO FIGURE OUT HOW MUCH SUBSTANCE Substance D at 45 °C, is the YOU CAN DISSOLVE AT DIFFERENT TEMPERATURES** solution saturated? Match the temperature at 2) How many the bottom with the grams of solute grams of solute on the will have precipitated left side…where they from the meet is the solubility for solution? that substance. 3) How many grams of substance A are soluble in 100cm3 of water at 30°C? 4) How many grams of substance B are soluble in 100cm3 of water at 30°C? 2 .