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15
×
What are reactants?
Starting substances
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15
×
Name one laboratory acid
(e.g. hydrochloric acid / sulphuric acid / nitric acid)
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15
×
In a faster reaction, do particles collide more or less often?
more often
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eraser
Reset score!
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seesaw
Swap points!
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shark
Other team loses 10 points!
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thief
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5
10
15
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25
15
×
Why does crushing a solid increase reaction rate?
increases surface area
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15
×
A solid is heated and turns into a liquid, but no new substance forms. What type of change?
Physical change
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15
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What happens to particles when heated?
They move faster
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15
×
A student mixes vinegar and baking soda and sees bubbles. What type of change is this?
Chemical reaction (gas produced)
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heart
Other team wins 15 points!
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seesaw
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shark
Other team loses 25 points!
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lifesaver
Give 15 points!
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15
×
What pH is neutral?
7
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15
×
What elements are present in NaCl?
sodium and chlorine
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15
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Name one factor that increases the rate of reaction.
(temperature / concentration / surface area / catalyst)
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15
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Name one way to speed up a reaction
Increase temperature / surface area / concentration
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15
×
Which state has particles tightly packed in a fixed pattern?
Solid
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banana
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seesaw
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gift
Win 15 points!
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lifesaver
Give 10 points!
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banana
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gold
Win 50 points!
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gift
Win 10 points!
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banana
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