Revision Cards on Chemical Reaction
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| How can you tell when a chemical reaction has taken place? | There will be a change in colour, an energy change or a gas will be given off
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| What is the definition of decompose? | When one substance splits up into two or more products
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| What percentage of air contains oxygen? | 20%
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| What is the word equation for iron added to oxygen? | Iron + Oxygen -> Iron Oxide
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| What is acid rain? | Acid rain is rain containing sulphuric and nitric acid
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| What is the reaction when magnesium is heated? | Parts of the magnesium forms into a gas
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| How can you test for pure oxygen? | Place a burning splint into a jar or pure oxygen. Take the splint out at blow it, leaving it to glow. Oxygen will make it burst into flames again!
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| What happens when you cool down carbon dioxide to approximately -80°? | The carbon-dioxide will turn into dry ice
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| Name three gases that can put a flame out. | Carbon dioxide, helium and nitrogen
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| How are oxides formed? | Metals that are used in fireworks will burn in oxygen with a particular colour. This forms oxides!
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| How can we be sure that more energy is given off a reaction? | Heat, light and sometimes sound are given off
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| What extinguisher type is used for putting out a fire on petrol? | A foam (AFFF) extinguisher
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| What effects does a fire extinguisher have on fires? | Fire extinguishers cool the fire down or stop oxygen getting to the fuel
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| What is the fire triangle? | A way of showing in a diagram that heat, oxygen and fuel are needed for a fire
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| What happens if you add water to an electrical fire? | You will get an electric-shock
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| When a forest is on fire, what can help stop the fire from spreading? | A fire break. E.g. Streams or gaps between trees
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| What is the definition of combustion? | The scientific word for burning
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| What is wax made up of? | Carbon joined together with hydrogen
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| Complete the word equation: Methane + Oxygen -> | Methane + Oxygen -> Carbon Dioxide + Water
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| Why is energy not written in a word equation? | It is not a chemical substance meaning it is not a product
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| What is Nitroglycerine? | Nitroglycerine is a very dangerous explosive. If you drop a bottle of Nitroglycerine, it will have enough energy to start an explosive reaction!
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| Carbon Monoxide is a very poisonous gas. Name two features of carbon monoxide. | Carbon Monoxide doesn't smell and it is tasteless
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| How is carbon dioxide produced? | When carbon is joined with oxygen in the air
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| What is the word equation for combustion? | Fuel + Oxygen -> Carbon Dioxide + Water
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| What is the name we give chemicals that are only made up of carbon and hydrogen? | Hydrocarbon
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| What is a dry powder extinguisher used for? | Putting out fires involving metals or electrical fires
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| Explain how ice is a reversible change. | Ice ca be melted into a liquid but when you place it in the freezer, it can turn back into a solid
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| How can hydrogen and oxygen be split? | Electrical energy can split them apart
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| What is rusting an example of? | Corrosion
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| What is the best way for putting our an oil fire? | Cover it with sand, soil or a fire blanket
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| What makes limewater go milky? | Carbon dioxide
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| What is dynamite used for? | Dynamite is used to blast rock out of quarries, build roads through hills and knick down old buildings
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| How do terrorists use explosives? | To kill or injure in crime
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Created by:
Toni.Perez
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