| A | B |
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| A chemical reaction occurs during the formation or breaking of ______ ______. | chemical bonds. |
| Chemical reactions can be influenced by: ______,______,_____ | temperature concentration of reactants and products catalysts |
| Energy - | the power to do work |
| Energy - | the power to do work |
| Work - | a change in mass or distance |
| Energy exists in 2 forms What are they? | Potential and kinetic |
| Potential energy | stored energy |
| Kinetic energy | energy of motion |
| Chemical energy | - potential energy stored in chemical bonds. ATP |
| Electrical energy | – movement of charged particles |
| Mechanical energy – | moving matter |
| Radiant energy – | electromagnetic (energy in waves) |
| Hydrolysis | Hydrolysis is defined as a chemical reaction where something reacts with water and is changed into a new substance.-----A—B—C—D—E + H2O -->A—B—C—H + HO—D—E |
| A—B—C—D—E + H2O -->A—B—C—H + HO—D—E | Hydrolysis |
| Dehydration synthesis (condensation): | A chemical reaction that builds up molecules by losing water molecules. |
| A—B—C—H + HO—D—E -->A—B—C—D—E + H2O | Dehydration synthesis (condensation) |
| Activation energy | gets a chemical reaction in a cell started. Chemical reactions in cells cannot start without help |
| Enzymes: | proteins that lower the activation energy(takes less energy to perform reaction)) of a reaction |
| Exergonic reactions:(def of PP) | produce more energy than they use-- |
| Endergonic reactions:(def of PP) | : use more energy than they produce |
| Exergonic reactions-explaination | Exergonic reactions are chemical reactions that release energy in the form of heat. Typically, this energy is released when bonds are broken. More specifically, in humans, these reactions are called catabolic, which means that the molecules are being broken down into smaller components. By breaking these bonds, systems (such as the human body ) can receive the energy need to perform its function(s). |
| Endergonic reactions-explaination | An endergonic reaction is a reaction that requires energy to be absorbed in order for it to take place. Photosynthesis is used by all plants to convert light energy into a form of chemical energy that can be used to fuel their life processes.But plants cannot complete the process without the input of light energy. This makes photosynthesis an endergonic reaction. |
