6.2 How is energy transformed during chemical reactions?

exergonic reactions release energy
1. sugar+O=CO2 and H2O, generating heat and chemical energy
2. energy in reactants is higher that molecules , so it is an exergonic reaction
3. downhill reactions
chemical reaction
1. process that forms or breaks the chemical bonds that hold atoms together
2. reactants
  1. set of chemical substances that are transformes
3. products
  1. chemical substances that are the result
4. all chemical reactions release or require energy
  1. exergonic
    1. releases energy
  2. endergonic
    1. requieres energy
endergonic reactions requiere a net input of energy
1. synthesizing complex biological requires a net input of energy
2. uphill reactions
3. photosynthesis used light energy to produce high-energy
All chemical reactions requiere activation energy to begin
1. activation energy is the energy required to start a chemical reaction
2. Activation energy is required to overcome the repulsive electrical forces between the electron shell so that they can move close enough together to react
3. activation energy can be provided by kinetic energy, moving molecules

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	Created by María Daniela Portillo Ortiz about 3 years ago