Science(The atmosphere)
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 is the atmosphere? | A layer of gases around the Earth, theses gases are known as air
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What gases are in the air and what are their concentrate? | Nitrogen=78%, Oxygen=21% and (Argon,carbon dioxide and water vapour=1%)
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What is a catalyst? | Substances that alter the rate of a chemical reaction but are not used up themselves
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What is the word equation for the perparation of oxygen? | Hydrogen peroxide --->manganese dioxide---> oxygen + water
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What is the chemical equation for the perparation of oxygen? | 2H2O --> MnO2--> O2 + 2H2O
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What is the result of the test for oxygen? | It relights a glowing splint
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What is the test for carbon dioxide? | Carbon dioxide turns limewater milky
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What is the word equation for the perparation of carbon dioxide? | Hydrochloric acid + calcium carbonate ---> calcium chloride + water + carbon dioxide
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What is the chemical equation for the perparation of carbon dioxide? | 2HCl CaCO3 ---> CaCl2 + H2O + CO2
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What are the uses or carbon dioxide? | Refrigeration,stage effects,fire extinguishers and fizzy drinks
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Created by:
Chimozukee
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