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heart
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gift
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gift
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thief
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5
×
Atoms contains protons, neutrons and electrons. Protons are ______ charged.
Positively
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5
×
Using the periodic table, find the number of protons in one atom of Carbon
6
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5
×
In chromatography, name the liquid that the pigments are dissolved in
solvent or alcohol
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5
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In chromatography, we draw the base-line in pencil because...
ink would dissolve in solvent
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10
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Word equation for Water reacting with Sodium
sodium + water => sodium hydroxide + hydrogen
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5
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Atoms contains protons, neutrons and electrons. neutrons are ______ charged.
neutral
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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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thief
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magnet
Take 25 points!
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fairy
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baam
Lose 10 points!
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5
×
State the conditions needed for rusting
Oxygen and Water
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5
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Particles in a gas are arranged....
Far apart
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What is the meaning of the term "isotope"?
Atoms with the same number of protons but different number of neutrons
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10
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State 2 physical properties of all metals (10points)
Conduct heat/electricity, ductile, shiny surface
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thief
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gift
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fairy
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lifesaver
Give 25 points!
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5
×
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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What pH value is neutral?
pH7
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