Science (reactivity and materials)

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What is the difference between exothermic and endothermic ?
Exothermic gives off energy therefore endothermic keeps energy inside
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If we put more energy in than out it's .... And the opposite.....
More energy in than out (endothermic) less energy in than out (exothermic )
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What is a reactant and product ?
A reactant is what you start with and the product is what you end up with
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What is thermal decomposition ?
Thermal decomposition is the breakdown of a chemical by heat
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Calcium carbonate (heated ) carbon dioxide + calcium oxide
Limestone. CO 2. Quicklime
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What are properties of materials ?
Properties of materials are suited to what it's meant to be used for
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What are designer materials ?
Designer materials are materials that have been created for a specific purpose
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If something fizzes it means ....
Gas is being given off
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If something whizzes it means .....
Energy is being released
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If it bursts into flames ....
So much energy has been released it turns to heat and light (flame)
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Other cards in this set

Card 2

Front

If we put more energy in than out it's .... And the opposite.....

Back

More energy in than out (endothermic) less energy in than out (exothermic )

Card 3

Front

What is a reactant and product ?

Back

Preview of the front of card 3

Card 4

Front

What is thermal decomposition ?

Back

Preview of the front of card 4

Card 5

Front

Calcium carbonate (heated ) carbon dioxide + calcium oxide

Back

Preview of the front of card 5
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