LONG QUIZ BEE IN SCIENCE Q1

 

QUIZ BEE FOR SCIENCE QUEST
(THIS ALSO SERVES AS LONG QUIZ NO. 1)
 Name: ________________________________________________________________
LRN: ___________________________________________________________________



**1. What is a mixture in chemistry?
   a. A pure substance
   b. A combination of two or more substances
   c. A chemical reaction
   d. A solid substance

**2. Which of the following is NOT an example of a mixture?
   a. Air
   b. Pure gold
   c. Lemonade
   d. Salad

**3. What type of mixture has components that are not evenly distributed and can be distinguished easily?
   a. Homogeneous mixture
   b. Heterogeneous mixture
   c. Colloid
   d. Suspension

**4. Which of the following is a homogeneous mixture?
   a. Sand and water
   b. Oil and vinegar
   c. Salt and pepper
   d. Sugar and water

**5. What is the process of separating a solid from a liquid by using a filter paper or sieve called?
   a. Distillation
   b. Filtration
   c. Evaporation
   d. Decantation

**6. How is a solution different from a suspension?
   a. A solution is heterogeneous, and a suspension is homogeneous.
   b. A solution is a type of mechanical mixture.
   c. A solution contains multiple types of particles.
   d. A solution cannot be separated by physical means, while a suspension can.

**7. What method is commonly used to separate a mixture of iron filings and sand?
   a. Magnetism
   b. Filtration
   c. Evaporation
   d. Dissolving in water

**8. Which separation technique involves heating a liquid to create vapor and then cooling the vapor to get a liquid again?
   a. Filtration
   b. Distillation
   c. Decantation
   d. Chromatography

**9. How can you separate a mixture of salt and water?
   a. Boil the mixture
   b. Filter the mixture
   c. Evaporate the water
   d. Use a magnet

**10. Which of the following is a method used to separate a mixture of oil and water?
    a. Filtration
    b. Distillation
    c. Magnetism
    d. Decantation

**11. What type of mixture is milk, which consists of water, fats, proteins, and other dissolved substances?
    a. Homogeneous
    b. Heterogeneous
    c. Colloid
    d. Suspension

**12. Which method would you use to separate a mixture of ink and water?
    a. Filtration
    b. Distillation
    c. Decantation
    d. Centrifugation

**13. Why does a suspension eventually settle over time?
    a. Because the particles are too small to see
    b. Because the particles are evenly distributed
    c. Because the particles are too heavy to remain suspended
    d. Because the particles dissolve in the solvent

**14. If you want to separate a mixture of sugar and sand, which process would you use?
    a. Filtration
    b. Distillation
    c. Magnetism
    d. Decantation

**15. What is the main difference between a solution and a colloid?
    a. The size of the particles
    b. The color of the mixture
    c. The number of components
    d. The method of separation

**16. Which method would you use to separate a mixture of salt and sand?
    a. Filtration
    b. Distillation
    c. Magnetism
    d. Decantation

**17. Which of the following is NOT a method for separating mixtures?
    a. Heating
    b. Filtering
    c. Mixing
    d. Evaporation

**18. What is the name for a mixture where the particles are evenly distributed and do not settle over time?
    a. Homogeneous
    b. Heterogeneous
    c. Colloid
    d. Suspension

**19. Which of the following is a method used to separate components of a mixture based on their solubility in a solvent?
    a. Filtration
    b. Distillation
    c. Chromatography
    d. Decantation

**20. What type of mixture is air, which contains a mixture of gases such as nitrogen, oxygen, and carbon dioxide?
    a. Homogeneous
    b. Heterogeneous
    c. Colloid
    d. Suspension






EXCHANGE PAPERS! 








ANSWER KEY

**1. b**. A combination of two or more substances
**2. b**. Pure gold
**3. b**. Heterogeneous mixture
**4. d**. Sugar and water
**5. b**. Filtration
**6. d**. A solution cannot be separated by physical means, while a suspension can.
**7. a**. Magnetism
**8. b**. Distillation
**9. c**. Evaporate the water
**10. d**. Decantation
**11. a**. Homogeneous
**12. a**. Filtration
**13. c**. Because the particles are too heavy to remain suspended
**14. d**. Decantation
**15. a**. The size of the particles
**16. a**. Filtration
**17. c**. Mixing
**18. a**. Homogeneous
**19. c**. Chromatography
**20. a**. Homogeneous


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