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9 Cards in this Set
- Front
- Back
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Surface area and chemical reactions.
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Result: crushing the tablet caused the reaction to happen faster.
Explanation: Extra surface area allows more space for reactions to happen. Molecules react when particles in a gas or a liquid collide with the particles of a solid. If the surface area is increased, so is the chance of collision. |
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Gum.
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Results: When you chew gum the weight will decrease over time.
Explanation: The saliva in your mouth will dissolve the sugar (glucose) in the gum taking away a major part of the mass. The gum will now only contain the gum base. |
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Temperature and Crystals.
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Results: The higher the temp. of the water, the more the crystal grows.
Explanation: |
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Cooling of water.
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Results:
Explanation: |
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Salinity of Water
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Results: When the salinity of the water was increased the test tube would sink faster
Explanation: Denser materials will sink and salt increased the density of the water because adding mass to a contained material will increase the density. |
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Chemical Reactions and Temperature.
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Results: When the vinegar was at its hottest temp. (80 degrees) the rate of reaction was much quicker than when it was at its coldest temp. (0 degrees)
Explanation: When it is colder molecules combine at a much lower speed and when its hotter molecules combine at a faster speed leading to fast and slow reactions depending on temperature. |
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Chemical Reactions and Limiting of Reactants.
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Results:
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Oxygen produced from combining hydrogen peroxide and potatoes.
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Results:
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Decomposition of Water.
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Results:
Explanations: |
