Energy - Energy Energy istheabilitytodowork...

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Energy Ø Energy is the ability to do work Ø may be converted  from one form to another Ø Sunlight  is the ultimate energy for all life on earth Ø Forms of energy Ø Free energy  is the energy available for work (e.g. cells have energy to carry out cell  processes) Ø Cells convert the chemical energy  stored in food into other types of energy such as  Ø Energy is used to change matter form one state into another (e.g. liquid into a gas) Chemical Reactions Ø Living things undergo thousands of chemical reactions Ø Chemical equations  represent chemical reactions Ø CO 2  + H 2 0-----goes to-----H 2 CO 3   (carbonic acid) is a sample Chemical Reaction in living  things Ø Reactants  are on the  left  side of the equation, while  product s are on the  right side    Activation energy is required to start many reactions
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Energy - Energy Energy istheabilitytodowork...

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