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Cheimcal Changes - Coggle Diagram
Cheimcal Changes
Chemical Reactions
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Combustion
A chemical reaction in which a substance is heated in the presence of oxygen gas to form one or more new substances
Thermal Decomposition
A chemical reaction in which a substances, upon heating, breaks down into two or more simpler substances
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Acid
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Can react with alkalis, metals and carbonates
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pH scale
0 - 6 is acidic, 6 being least and 0 being most
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8 - 14 is alkali, 6 being least and 14 being most.
Changes
Chemical
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Examples: Rotting, Combustion, Rusting, Digestion, Dissolving
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Chemical reactions in which two or more substances chemically combine to form one or more new substances
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Physical
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Example: Chopping, Shredding, Boiling, Melting
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