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Does anyone know the difference? I can never tell what the differences are, they all seem the same to me.

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What’s the difference? I was just with my friends and she was solving chemical equations using products and reactants and trying to make them equal. Does anyone know what these terms mean?

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Does anyone know what the Chemical changes and Physical changes are? I can never remember what the difference is.

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I was just reading an article and saw open and closed systems, I have no idea what either of them mean. Does anyone know what they mean and what the differences are?

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Does anyone know what the Law of Conservation of Mass is?

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Hi I am looking to do a science experiment. Does anyone have any suggestions on what I should do?

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Hey everyone, I was looking for some information about physical reactions. My friend has a project and needs help! If you know anything please reply

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I just finished my experiment and chose Coke and Mentos. The reaction was very surprising to me! Some of the safety precautions I used were making sure I had a bowl around so that it did not explode and go everywhere. The only ingredients that I used were Diet Coke and Mentos. The steps I took were, first I bought a cup of diet coke and mentos, then I put the items in a bowl and then mixed them and watched the reaction.

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Does anyone what some physical reactions are?

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Does anyone what some physical reactions are?

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H₂O + CO₂ ——>   H₂CO₃

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I just learned this is the chemical equation used for coke and mentos

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The system is open because the bubbles fizz and rise up in the cup.

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This relates to the experiment because even though a chemical reaction occured none of the molecules or atoms were losed and no atoms or molecules were created.