SCIENCE 6 QUIZ - Q1 WEEK 6

 SCIENCE 6 QUIZ - Q1 WEEK 6

Direction: Write the letter and the text of the correct answer. 

1. What are the characteristics of a homogeneous mixture?

   A) Clearly visible separate components

   B) Uniform composition throughout

   C) Heterogeneous appearance

   D) Irreversible separation

 

2. Which term describes a mixture where the components are evenly distributed and not visibly distinguishable?

   A) Homogeneous mixture

   B) Heterogeneous mixture

   C) Compound

   D) Element

 

3. In a heterogeneous mixture, what is typically the appearance of its components?

   A) Uniformly mixed

   B) Evenly distributed

   C) Visibly separate

   D) Chemically bonded

 

4. What is one of the primary uses of a homogeneous mixture?

   A) Conducting electricity

   B) Filtering particles

   C) Separating components easily

   D) Displaying different colors

 

5. A mixture of sand and water would most likely be classified as:

   A) Homogeneous

   B) Heterogeneous

   C) A compound

   D) An element

 

6. What is the primary purpose of decantation in the separation of mixtures?

 

   A) To evaporate the solvent

   B) To filter out solid particles

   C) To separate substances with different densities

   D) To dissolve solutes in a solvent

 

7. Which technique is commonly used to separate a soluble solid from a liquid by heating the mixture and collecting the vapor?

 

   A) Decantation

   B) Filtration

   C) Evaporation

   D) Distillation

 

 

 

 

8. When using the filtration method to separate a mixture, what does the filter paper primarily help in separating?

 

   A) Gases from liquids

   B) Soluble solids from liquids

   C) Insoluble solids from liquids

   D) Solids from gases

 

9. Which of the following methods is effective for separating a mixture of sand and salt?

 

   A) Decantation

   B) Evaporation

   C) Filtration

   D) Centrifugation

 

10. In the process of evaporation to separate a mixture, what happens to the solvent?

 

   A) It is filtered to remove impurities.

   B) It is heated and converted to a gas.

   C) It is cooled and turned into a solid.

   D) It is mixed with other solvents for better separation.

 

11. Which of the following separation techniques is commonly used to separate small particles, such as flour or sand, from larger particles?

 

    A) Filtration

    B) Evaporation

    C) Sieving

    D) Decantation

 

12. What is the primary principle behind sieving as a separation technique?

 

    A) It relies on differences in solubility.

    B) It depends on the magnetic properties of substances.

    C) It uses a porous barrier to separate particles based on size.

    D) It involves the heating and cooling of a mixture.

 

13. When would you use a magnet as a separation technique for mixtures?

 

    A) To separate soluble solids from liquids.

    B) To separate substances with different melting points.

    C) To remove magnetic materials from a mixture.

    D) To filter out fine particles from a liquid.

 

14. In sieving, which of the following passes through the sieve's mesh?

 

    A) Larger particles

    B) Magnetic materials

    C) Smaller particles

    D) Non-magnetic materials

 

15. How does using a magnet for separation work for mixtures containing magnetic and non-magnetic materials?

 

    A) Magnetic materials stick to the magnet, while non-magnetic materials are collected separately.

    B) Non-magnetic materials are attracted to the magnet, leaving magnetic materials behind.

    C) Both magnetic and non-magnetic materials are attracted to the magnet and cannot be separated.

    D) A chemical reaction is used to separate magnetic from non-magnetic materials.

  

16. Which of the following best characterizes a homogeneous mixture in terms of its appearance and composition?

 

    A) It has visibly separate components, and its composition is non-uniform.

    B) It has visibly separate components, but its composition is uniform.

    C) It has no visibly separate components, and its composition is non-uniform.

    D) It has no visibly separate components, and its composition is uniform.

 

17. In understanding the uses of heterogeneous mixtures, what is a common application of such mixtures in daily life?

 

    A) Making beverages like lemonade

    B) Producing pure drinking water

    C) Separating different types of recyclables

    D) Creating solutions like saltwater

 

18. Which of the following statements demonstrates an understanding of the characteristics of a homogeneous mixture?

     A) "A homogeneous mixture is a combination of two or more substances that are visibly separate."

    B) "A homogeneous mixture consists of uniformly distributed components, resulting in a uniform composition throughout."

    C) "A heterogeneous mixture is made up of substances that are thoroughly mixed, giving it a consistent appearance."

    D) "Homogeneous mixtures are typically characterized by visibly separate components and non-uniform composition."

 

19. In the process of decantation, what is the key principle being applied?

     A) Separation based on solubility

    B) Separation of substances with different densities

    C) Separation using a porous barrier

    D) Separation by magnetic properties

 

20. What is the primary purpose of evaporation as a separation technique?

     A) To remove soluble solids from a liquid

    B) To collect magnetic materials from a mixture

    C) To separate substances based on size

    D) To filter out fine particles from a liquid


ANSWER KEY


1. B) Uniform composition throughout

2. A) Homogeneous mixture

3. C) Visibly separate

4. B) Filtering particles

5. B) Heterogeneous

6. C) To separate substances with different densities

7. D) Distillation

8. C) Insoluble solids from liquids

9. C) Filtration

10. B) It is heated and converted to a gas

11. C) Sieving

12. C) It uses a porous barrier to separate particles based on size

13. C) To remove magnetic materials from a mixture

14. C) Smaller particles

15. A) Magnetic materials stick to the magnet, while non-magnetic materials are collected separately

16. D) It has no visibly separate components, and its composition is uniform

17. C) Separating different types of recyclables

18. B) "A homogeneous mixture consists of uniformly distributed components, resulting in a uniform composition throughout."

19. B) Separation of substances with different densities

20. A) To remove soluble solids from a liquid

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