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5
×
In chromatography, we draw the base-line in pencil because...
ink would dissolve in solvent
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5
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Atoms contains protons, neutrons and electrons. Protons are ______ charged.
Positively
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5
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Explain why painting an iron object prevents it from rusting
The layer of paint stops air and water reacting with the iron
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5
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What does a cooling curve show?
It shows how the temperature changes as a substance is cooled down.
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5
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When measuring a liquid being heated, we should stir the liquid. Why?
To ensure the temperature is same throughout
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10
×
Word equation for Water reacting with Sodium
sodium + water => sodium hydroxide + hydrogen
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5
×
State the conditions needed for rusting
Oxygen and Water
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5
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Using the periodic table, find the number of protons in one atom of Carbon
6
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seesaw
Swap points!
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gift
Win 25 points!
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rocket
Go to first place!
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baam
Lose 15 points!
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5
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Atoms contains protons, neutrons and electrons. neutrons are ______ charged.
neutral
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5
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What pH value is neutral?
pH7
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trap
No points!
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star
Double points!
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rocket
Go to first place!
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thief
Give points!
5
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25
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thief
Give points!
5
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15
20
25
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shark
Other team loses 25 points!
Okay!
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rocket
Go to first place!
Okay!
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baam
Lose 25 points!
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banana
Go to last place!
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fairy
Take points!
5
10
15
20
25
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rocket
Go to first place!
Okay!
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baam
Lose 25 points!
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5
×
Potassium Hydroxide reacts with Hydrochloric Acid. Name the salt Produced
Potassium Chloride
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5
×
Particles in a gas are arranged....
Far apart
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