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