C1.2 Chemical equations

What does a chemical equation show?
reactants->products
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What is the word equation for water?
hydrogen+oxygen->water
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What is the symbol equation for when calcium carbonate decomposes?
CaCO3->CaO+CO2
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Why is it important for a chemical equation to be balanced?
Because actoms cannot be created or destroyed. (Law of onservation of mass)
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What are the state symbols and what do they mean?
(s)-solid, (l)-liquid, (g)-gas, (aq)-dissolved in water (aqueous solution)
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Balance the equation for when hydrogen reacts with water.
2H2 + O2 -> 2H2O
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Other cards in this set

Card 2

Front

What is the word equation for water?

Back

hydrogen+oxygen->water

Card 3

Front

What is the symbol equation for when calcium carbonate decomposes?

Back

Preview of the front of card 3

Card 4

Front

Why is it important for a chemical equation to be balanced?

Back

Preview of the front of card 4

Card 5

Front

What are the state symbols and what do they mean?

Back

Preview of the front of card 5
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