664198
Beschreibung
Mindmap von mitul_patel07, aktualisiert more than 1 year ago
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Erstellt von mitul_patel07
vor etwa 10 Jahre
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Endo/Exo-thermic reactions
- ENDOTHERMIC REACTIONS
- Energy is taken in
- A CHEMICAL REACTION THAT TAKES
HEAT ENERGY IN, SHOWN BY A FALL IN
TEMP.
- As ammonium nitrate dissolves in
water it takes in heat energy from its
surroundings
- Photosynthesis uses light energy
from the sun to convert Co2 and H2O
into glucose and o2
- Old bonds are broken and new bonds are made
- ENERGY MUST BE SUPPLIED TO BREAK EXISTING BONDS
- The energy required to break old bonds in the reaction, is GREATER than
the energy released when new bonds are formed in the products
- Energy is taken in
- EXOTHERMIC REACTIONS
- A CHEMICAL REACTION IN
WHICH HEAT ENERGY IS
GIVEN OFF, SHOWN BY RISE
IN TEMP.
- Energy is given off
- Burning fuels (combustion) and Explosions
- Olds bonds are broken and new bonds are made
- ENERGY IS released when new bonds are formed
- The heat energy released in forming bonds in the products, is GREATER
than the energy used in breaking old bonds in the reactants
- A CHEMICAL REACTION IN
WHICH HEAT ENERGY IS
GIVEN OFF, SHOWN BY RISE
IN TEMP.
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