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Mixtures and Solutions
Contributed by: Foster
  • 1. What is a mixture?
A) A combination of two or more substances that are physically combined
B) A chemical bond between two substances
C) A pure substance composed of only one type of atom
D) A single substance with uniform composition
  • 2. What is a colloid?
A) A mixture in which one substance is dispersed evenly throughout another substance
B) A pure substance that cannot be separated by physical means
C) A solution with maximum solubility
D) A type of compound with strong chemical bonds
  • 3. How can you separate a mixture of saltwater into salt and water?
A) By evaporation, leaving behind salt crystals
B) By freezing the mixture to extract the salt
C) By adding more water to dilute the salt
D) By filtration to remove the salt
  • 4. Which method can be used to separate a mixture of sand and water?
A) Evaporation
B) Decantation
C) Chromatography
D) Filtration
  • 5. What is the term for a solution in which no more solute can be dissolved?
A) Saturated solution
B) Supersaturated solution
C) Unsaturated solution
D) Dilute solution
  • 6. What is the term for a mixture that has visible particles that settle over time?
A) Emulsion
B) Alloy
C) Suspension
D) Buffer solution
  • 7. How does adding more solute to a solvent affect the freezing point of a solution?
A) It lowers the freezing point of the solution
B) It has no effect on the freezing point
C) It raises the freezing point of the solution
D) It causes the solution to solidify instantly
  • 8. When a mixture is heated to separate its components, what is this process called?
A) Filtration
B) Distillation
C) Chromatography
D) Decantation
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