Phase Changes and Heating Curve of Water

States of Matter 4 States of Matter Solid Liquid Gas Plasma

Phase Properties Phase Atoms Packed Energy Solid Little Liquid Closest; retains its own shape Little Liquid Closely but loose; takes the shape of its container Moderate Gas Far Apart; takes the shape of its container High

Phase Changes As heat is added or taken away, matter can change its state or phase

Phase Changes Changes States Involved Melting Solid → Liquid Freezing Liquid → Solid Vaporization Liquid → Gas Condensation Gas → Liquid Sublimation Solid → Gas Deposition Gas → Solid

Phase Changes Label the Phase Change Triangle in your notes now! WRITE the examples for each Phase type too!

Heating Curve of Water Water is matter that can go through ALL the different phase changes

Heating Curve of Water There is NO temperature change during a Change of Phase! All of the energy going into the substance is being used to change the substance from one state to another!

What is solubility? Solubility is the MAXIMUM amount of solute that will dissolve in a given amount of solvent at a specified temperature and pressure. For chemicals that are soluble, there is a limit to how much of the substance will dissolve. This limit is known as the solubility.

Solubility Curves The graph on the right shows amount of solute that is dissolved in 100 grams of water at specific temperatures. These are solutions! If the solution is saturated, there is exactly enough solute to dissolve completely in the water. Point is On the curve! If the solution is unsaturated, there is not enough solute to dissolved in the water. Point is Under the Curve! If the solution is supersaturated, There is TOO MUCH solute dissolved (not all will) in the water. Point is Above the Curve!