721641
Description
Mind Map by Kayleigh Peek, updated more than 1 year ago
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Created by Kayleigh Peek
over 10 years ago
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C3 Part 1
- ENERGY
- Measuring Food and Fuel Energy
- Energy Transferred = Mass of Water being heated x
Specific Heat Capacity x Temperature Change
- Specific Heat Capacity of Water: 4.2 J/g/^C
- 1ml = 1cm3 = 1g
- Energy Value / gram of fuel (in J/g) = Energy
Supplied/Mass of Fuel
- Energy Transferred = Mass of Water being heated x
Specific Heat Capacity x Temperature Change
- Energy Changes
- Exothermic = - VALUE
- Endothermic = + VALUE
- Exothermic = - VALUE
- Energy Level Diagrams
- Exothermic Reactions
- In the reaction, the energy stored in the products
is less than the energy stored in the reactants.
The extra energy first heats up the reaction
mixture. Then it is transferred to the
surroundings as heat.
- A HAND WARMER must give
out heat, so its an exothermic
reaction
- In the reaction, the energy stored in the products
is less than the energy stored in the reactants.
The extra energy first heats up the reaction
mixture. Then it is transferred to the
surroundings as heat.
- Endothermic Reactions
- In this reaction, the energy stored in the products is more
than the energy stored in the reactants. The extra energy
was taken from the reaction mixture, so it's temperature fell.
Then the mixture took in energy form the surroundings and
its temperature increased back from the temperature
- A SPORTS INJURY PACK
is designed to take in from the
surroundings, so its and
endothermic reaction
- In this reaction, the energy stored in the products is more
than the energy stored in the reactants. The extra energy
was taken from the reaction mixture, so it's temperature fell.
Then the mixture took in energy form the surroundings and
its temperature increased back from the temperature
- Exothermic Reactions
- Bond Breaking and Bond Making
- Hydrogen
- Measuring Food and Fuel Energy
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