Matter AndMatter AndEnergyEnergySAVE PAPER AND INK!!! When youprint out the notes on PowerPoint,print "Handouts" instead of"Slides" in the print setup. Also,turn off the backgrounds(Tools>Options>Print>UNcheck"Background Printing")!
Chemical Reactions and Energy•All chemical changes are accompanied by achange in energy•Energyis either absorbed or released as thechemical change takes place.Energy is theability to do work.
Chemical Reactions and Energy•Energy is primarily released in the forms ofheat and/or light•Chemical reactions that release heat energyare calledexothermicreactions.•Chemical reactions that absorb heat energyare calledendothermicreactions.
Fundamental Chemical Laws—Lawof Conservation of Mass•The Law of Conservation of mass says that ina chemical change, matter is neither creatednor destroyed. It would be equally correct tocall this the law of conservation of matter.