Please help.
Help me on my homework!
Help me on my homework!
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Physical changes are changes to the appearance of something. An example of a physical change is water freezing an ice cube, which to reverse, you just need to heat the ice. But chemical changes change the composition of something. An example of a chemical change is burning something, which is pretty hard to reverse.
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Well, *technically* you can reverse SOME chemical reactions, if they're in equilibrium. LeChatleir's principle states that if you remove one side of a balanced chemical equilibrium, the other side will shift to that side to balance it again. If you remove products, it'll make more product; remove reactants and it will make more reactants.
In this case, I wouldn't bring that up at all. Physical changes are easier to change back - like when you melt an ice cube, then re-freeze the water.
In this case, I wouldn't bring that up at all. Physical changes are easier to change back - like when you melt an ice cube, then re-freeze the water.
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Physical, like melting ice and making water you can just freeze the water.
Chemical you can't reverse it, like when you burn a piece of paper, you get ashes, you can't turn the ashes back into paper.
Chemical you can't reverse it, like when you burn a piece of paper, you get ashes, you can't turn the ashes back into paper.
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Physical. You can return it. Chemically it's impossible
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Physical.
Chemical changes are irreversible.
Chemical changes are irreversible.