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25
×
What is solubility?
The ability of a solute to dissolve in a solvent.
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15
×
_____________________ is the technique used to separate dissolve solids from a solid-liquid mixture.
Evaporation
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15
×
_____________is a metal that is liquid in a room temperature. State the common use of the said metal.
Mercury. It is used in the thermometers.
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25
×
Explain why solid particles can be separated from a liquid by filtration.
The filter paper allows tiny water molecules to pass through the tiny pores in the paper, whilst holding back the much larger particles of solid.
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25
×
Give the difference between solubility and rate of solubility.
The rate of solubility is the amount of solute that dissolves in a fixed volume of solvent, given a fixed amount of time
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banana
Go to last place!
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magnet
Take 25 points!
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shark
Other team loses 25 points!
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banana
Go to last place!
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20
×
The pure liquid collected from distillation is called the ____________.
distillate
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10
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True of False: A suspension is a mixture that dissolves in a solvent.
False. The insoluble substances are suspended in a liquid or gas.
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25
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Give 3 factors that can affect the rate of solubility.
temperature, size of solute particles, rate of stirring
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banana
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gift
Win 25 points!
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rocket
Go to first place!
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lifesaver
Give 15 points!
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15
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Element, Compound, Mixture: It can be broken down by chemical methods.
compound
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25
×
The technique used to separate a mixture depends on ________________________ and _____________.
physical properties of the substances present in the mixture and substance(s) to be obtained from the mixture.
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15
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_________________ is the technique used to separate a pure liquid from a solid-liquid or liquid-liquid mixture.
Distillation
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boom
Lose 50 points!
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rocket
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fairy
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15
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25
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banana
Go to last place!
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10
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True or False: When a mixture is formed, no chemical reaction occurs. Hence, a chemical reaction can be separated easily by physical methods.
True
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20
×
The liquid that passes through the filter is called the ________________.
filtrate
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