Energetics old
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​Every chemical reaction has an accompanying change in energy.
Some reactions release energy to the surroundings and are known as Exothermic.
Reactions which take in energy from their surroundings are known as Endothermic
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- ​This shows a range of chemical changes - all of which release energy .
- In some cases the energy release is rather sudden.
- Listen carefully and try to note down the names of the chemicals involved.
- For each reaction try to write a word equation.
- Write a symbol equation for each reaction.
- What is unusual about the last reaction ?
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​Seriously Exothermic
The hydrocarbon compound Ethyne will burn with a very hot flame. Ethyne is also known as Acetylene. An oxyacetylene torch will cut through steel plate and will even burn underwater!
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In this video you can see how a chemical reaction can be used to power a solid fuel rocket.
In this reaction, the chemical reaction releases energy. This is an example of an EXOTHERMIC reaction.
Heating water
Why does the balloon not pop?
What does the narrator say about the heat capacity of the water
can we use this data?
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