
Year 8 Science Concentration and Chromatography
Authored by Martin Ward
Science
8th Grade
Used 1+ times

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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the concentration of a solution indicate?
A) The weight of the solvent
B) The amount of solute dissolved in the solvent
C) The colour of the solution
D) The temperature of the solvent
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following statements about concentration is true?
A) High concentration means a large volume of solvent
B) Low concentration means a large volume of solute
C) Low concentration means few particles of solute in the solvent
D) High concentration means few particles of solvent in the solute
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is paper chromatography used for?
A) To measure the concentration of a solution
B) To separate and identify substances in a mixture
C) To determine the temperature of a solution
D) To analyse the pH of a solution
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does paper chromatography work?
A) By boiling the mixture to separate its components
B) By passing the mixture through a filter
C) By allowing the components of the mixture to travel up a strip of paper at different rates
D) By mixing the components with a solvent to form a solution
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What determines how far each component of a mixture travels on the paper in chromatography?
A) The temperature of the solvent
B) The size of the paper strip
C) The chemical properties of the components
D) The polarity of the components and the solvent
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
How does increasing the concentration of a solution affect its properties?
A) It decreases its boiling point
B) It increases its freezing point
C) It reduces its viscosity
D) It makes it less reactive
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