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Unit #1Unit #2Unit #3Unit #4Unit #5Unit #6Unit #7Unit #8Unit #9Unit #10
spacerUNIT # 2  
spacerspacerIntroduction
spacerspacerObjectives
spacerspacerReading


spacer2.1 Physical
spacerStates of
spacerMatter

spacer2.2 Physical &
spacerChemical
spacerProperties
spacer2.3 Physical &
spacerChemical
spacerChanges

spacer2.4 Classific-
spaceration of

spacerMatter
spacerPure Substances

spacerMixtures

spacer2.5 Energy
spacerPotential and Kinetic Energy

spacerEndothermic and Exothermic Reactions
spacerLaw of Conservation of Energy

spacerspacerProblems
   

Unit #2 MATTER AND ENERGY

2.5 - Energy

2.5.3 - Law of Conservation of Energy

Now that we understand that energy can be converted from one form to another, it is as important to know the scientific law that governs energy. It is known as the Law of Conservation of Energy.

In any physical and chemical changes, energy is neither created nor destroyed.

Scientists have reached the conclusion that although energy has many different forms that are interconvertable, when one form of energy disappears, some other form of energy of equal magnitude must appear, and vice versa. In other words, the total quantity of energy in the universe is constant.

Section 3.6
Laws of Conservation ..p66

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