Chemistry: Notes I took in class on Heat and Energy.

Energy- the ability to do work or produce Heat *Potential *Kinetic Potential Energy- Energy that is stored; comes from composition or position of object Ex: Energy stored in foods and fuels energy possessed by H2O behind a dam Chemical Potential Energy- Stored Energy held within the bonds that hold atoms or molecules together. Some molecules hold more energy than others. Ex: Fuels like gasoline Ex: Foods like carbs Kinetic Energy- Energy in motion. Kinetic …

…destroyed. It can only change forms into other matter or energy. YOU NEVER DESTROY MATTER!! Ex:<Tab/>A + B à AB <Tab/>40g + B à 70g <Tab/>B à 30g Phases of Matter Evaporation- liquid to gas Condensation- gas to liquid Sublimation- solid to gas Precipitation- gas to liquid Freezing- liquid to solid Melting- solid to liquid