ReactionsTestYr9
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What are some examples of a chemical reaction? | -cooking
-explosions
-burning
-blood clotting
etc.
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| Do exothermic reactions give out or use energy? | Give out energy
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| What are three things that can increase molecular collisions? | 1. Higher Temperature
2. Higher Concentration
3. More Surface Area
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| If the temperature is higher the reaction rate is? | Faster.
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| What are the 3 states of matter? | -Solid
-Liquid
-Gas
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| What is a chemical reaction? | A chemical reaction is a reaction that forms new substances.
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| As the concentration goes lower the reaction rate gets? | Slower.
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| What is the law of conservation of mass? | The total mass of the reactants is always equal to the total mass of the products.
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| If there is more surface area, the rate of the reaction would be? | Faster.
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| What type of energy is released during an exothermic reaction? | Usually heat but also light, sound and electrical energy.
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| What type of reaction depends on energy to happen? | an Endothermic reaction for example photosynthesis or baking bread.
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| what are the two main types of reactions? | Physical and Chemical.
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| WHat are some examples of a physical reaction? | -Melting Ice
-freezing ice
-blending
-crushing something like fruit or ice
-evaporation
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| what is a physical reaction? | a reaction that can generally be reversed. it doesn't form any new substances.
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Created by:
Acaruso
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