Flashcards for Chemical Reactions

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What is combustion?
It's a chemical reaction that occurs between a fuel and an oxidising agent that produces energy, usually in the form of heat and light. It is a more scientific word for burning.
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How would you slow a reaction?
If you decrease the temperature, fewer particles would collide, causing fewer collisions.
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How would you increase the reaction rate?
Increase the concentration of a reactant, the temperature of the reactants, the surface area of a reactant, or add a catalyst.
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Examples of a chemical change
Cooking an egg, heating sugar to form caramel, baking a cake, rusting of iron & burning wood.
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Examples of a physical change
Mixing sand and water. Breaking a glass. Dissolving sugar and water, paper. Chopping wood.
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Other cards in this set

Card 2

Front

How would you slow a reaction?

Back

If you decrease the temperature, fewer particles would collide, causing fewer collisions.

Card 3

Front

How would you increase the reaction rate?

Back

Preview of the front of card 3

Card 4

Front

Examples of a chemical change

Back

Preview of the front of card 4

Card 5

Front

Examples of a physical change

Back

Preview of the front of card 5

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