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10
×
The solubility of salt in water is 357g/L. What does this mean?
The max amount of salt that can dissolve in a liter of room temperature water is 357 grams - after that, salt will start to settle on the bottom.
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5
×
What is an alloy? Give an example.
A mixture (usually a solution) of a metal with another solid. e.g. brass, steel...
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10
×
What type of reaction is involved when stuff rusts?
Synthesis (Fe + O -> FeO)
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15
×
What's an endothermic reaction?
A reaction that absorbs heat (energy)
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lifesaver
Give 10 points!
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seesaw
Swap points!
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shark
Other team loses 25 points!
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baam
Lose 5 points!
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5
×
Many things can dissolve in water. For that reason, water is sometimes called the universal _______.
Solvent
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10
×
Vinegar is a solution of a very strong acid (acetic acid) and water. Which is the solute and which is the solvent?
Solvent = water; Solute = acid
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5
×
In a solution, the substance that the solute dissolves in is called __________
the solvent
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10
×
Give an example of a solid solution, liquid solution, and gas solution.
Solid: 14k gold, steel, bronze... Liquid: saltwater, sugar water, vinegar, tea, coffee, etc. Gas: air, smoke, etc.
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10
×
What happens during a replacement reaction?
Elements in compounds switch around.
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lifesaver
Give 20 points!
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seesaw
Swap points!
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rocket
Go to first place!
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baam
Lose 5 points!
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5
×
What does it mean for a mixture to be homogenous?
The substances are uniformly distributed; the mixture looks the same throughout (e.g. homogenized milk).
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baam
Lose 20 points!
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shark
Other team loses 10 points!
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rocket
Go to first place!
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thief
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25
15
×
When a gas substance is cooled, what happens to its particles? Show using words and a picture.
...
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15
×
You are asked to separate a mixture of sugar and pepper. Using scientific vocab, describe how you would do it.
(dissolving, floating/settling, evaporation, etc.)
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10
×
What are the three main parts of an atom?
Protons, neutrons, electrons.
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