Experimental Chemistry & Kinetic Particle Theory Recap

Three apparatus used for measuring volumes are shown. Which apparatus can be used to measure out 25.0cm³ of water accurately?

• 1 only

• 2 only

• 1 and 2

• 2 and 3

Which gas can be collected by both the upward delivery method and water displacement method?

• 1

• 2

• 3

• 4

A gas turns moist red litmus paper blue, is soluble in water and less dense than air. Which method should be used to collect a sample of this gas?

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• 
• 
• 

Which property indicates that a solid is pure?

• It has a fixed melting point.

• It has a fixed volume.

• It is soluble in water.

• It burns completely in oxygen, leaving no residue.

Which graph shows the change in concentration of the ethanol in flask F as the distillation proceeds? (hint: think about which liquid boils over first as the temperature increases)

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• 
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Which statement is correct?

• Locating agents are always needed to interpret a chromatogram.

• The chromatography paper must be placed with the solvent below Z.

• Substance X has a lower R_f value than substance Y.

• A

• B

• C

• D

Which two dyes make up the ink sample?

• 1 and 2

• 1 and 5

• 2 and 4

• 3 and 4

The first liquid collected by fractional distillation is _, and the first liquid collected by separating funnel is _.

• X, X

• X, Y

• Y, X

• Y, Y

Which statement about the Kinetic Particle Theory is NOT true?

• It describes the different states of matter.

• It explains the changes in states.

• It explains the difference in properties between solids, liquids and gases.

• It explains why different substances have different solubilities.