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18 Cards in this Set
- Front
- Back
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What is the main difference between a chemical and physical change? |
chemical: just rearranging, physical: actual change you can see |
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Where do products come from? |
atoms in the reactant side |
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How does the number of atoms on the reactant side compare to the number of atoms on the product side? |
They're balanced |
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"Mass is conserved" means... |
atoms aren't created or destroyed |
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Can you continue to add more of one reactant and to expect more product? Why or why not? |
No because it doesn't have anything to react with |
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What is a percipitate? |
An insoluble solid that forms when two solutions are combined |
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When you combine vinegar and baking soda, a gas is produced. Why is the gas considered evidence that a chemical reaction occured? |
the atoms rearranged and made something new |
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Explain on a molecular level why a hot solution will react faster than a cold solution |
Because they can move faster, they can rearrange and disslove things faster |
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How does a catalyst affect the rate of a reaction? |
It speeds it up |
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Is a catalyst included in the reaction? |
NO! |
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Endothermic |
cold, heat is absorbed |
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Exothermic |
Hot, heat is released |
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Endothermic |
big up, big up little down, little down |
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Exothermic |
little up, little up, big down, big down |
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Picture H3O+ OH- |
Proton is being transferred |
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H30+ AND OH- acidic, basic, or neutral? Why? |
Adic because it adds a proton |
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Number for Acidic, Basic, and Neutral |
Acidic: 1-6 Neutral: 7 Basic: 8-10 |
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Acid___ and Base____ |
adds, subtracts |
