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Solutions (Grade 10)

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Solutions

1. 
How can an aqueous solution of potassium chloride be classified?
  1. a homogeneous substance
  2. a heterogeneous mixture
  3. a compound
  4. a homogeneous mixture
2. 
Which of the following represents a solution?
  1. sand and water
  2. CO (s)
  3. KF (aq)
  4. Xe (g)
3. 
Which statement correctly describes a solution formed when sodium chloride is dissolved in water?
  1. Sodium chloride is the solvent, and water is the solute
  2. Sodium chloride is the solution, and water is the solvent
  3. Sodium chloride is the solute, and water is the solvent
  4. Sodium chloride is the solvent, and water is the solution
4. 
Which statement correctly explains why hydrogen fluoride dissolves in water?
  1. Hydrogen fluoride is nonpolar and water is nonpolar.
  2. Hydrogen fluoride is polar and water is nonpolar.
  3. Hydrogen fluoride is nonpolar and water is polar.
  4. Hydrogen fluoride is polar and water is polar.
5. 
Methane is nonpolar, acetic acid is polar, and oxygen gas is nonpolar. Which statement correctly describes the behavior of these substances in water?
  1. Oxygen gas and methane don't dissolve in water, while acetic acid is soluble in water.
  2. Oxygen gas doesn't dissolve in water, while methane and acetic acid dissolve in water.
  3. Oxygen gas dissolve in water, while methane and oxygen gas don't.
  4. Oxygen gas, methane, and acetic acid are all insoluble in water.
6. 
A student makes an aqueous solution of sodium hydroxide. Which statement correctly identifies the two ions present in the solute of this mixture?
  1. The sodium ion is negative, and the hydroxide ion is positive.
  2. The sodium ion is positive, and the hydroxide ion is negative.
  3. The sodium ion is positive, and the hydroxide ion is positive.
  4. The sodium ion is negative, and the hydroxide ion is negative.
7. 
In aqueous solution of potassium fluoride, a potassium ion is attracted to which end of the water molecular?
  1. the hydrogen end, which is positive
  2. the hydrogen end, which is negative
  3. the oxygen end, which is neutral
  4. the oxygen end, which is negative
8. 
Based on considerations of solubility, which of these solutions is insoluble?
  1. KCl (aq)
  2. LiF (aq)
  3. NaBr (aq)
  4. AgCl (aq)
9. 
A solution is made that contains hydrogen fluoride, HF, dissolved in water. Explain why the solution is a homogeneous mixture.



10. 
Name one ion that, when combined with chloride ions, forms an insoluble compound.



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