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- 1. Multiple Choice
Which separation technique is used to separate a mixture of liquids with different boiling points?
distillation
filtration
evaporation
chromatography
- 2. Multiple Choice
Which separation technique is used to separate a solute from a solvent by heating the mixture?
distillation
filtration
decantation
evaporation
- 3. Multiple Choice
Which separation technique is used to separate different components of a mixture based on their different affinities to a stationary phase and a mobile phase?
filtration
distillation
chromatography
evaporation
- 4. Multiple Choice
What is the purpose of distillation in separation techniques?
To separate a mixture of liquids based on their different densities.
To separate a mixture of solids based on their different melting points.
To separate a mixture of liquids based on their different boiling points.
To separate a mixture of gases based on their different solubilities.
- 5. Multiple Choice
What is the purpose of evaporation in separation techniques?
To separate a mixture of a solid and a liquid by vaporizing the liquid component.
To separate a mixture of a solid and a liquid by dissolving the solid component.
To separate a mixture of gases by condensing the less volatile component.
To separate a mixture of two liquids by vaporizing the more volatile component.
- 6. Multiple Choice
What is the purpose of chromatography in separation techniques?
To combine the components of a mixture.
To identify the components of a mixture.
To heat the components of a mixture.
To separate and analyze the components of a mixture.
- 7. Multiple Choice
What is the purpose of magnetism in separation techniques?
To separate magnetic substances from non-magnetic substances.
To attract non-magnetic substances towards magnetic substances.
To mix magnetic and non-magnetic substances together.
To prevent the separation of magnetic substances from non-magnetic substances.
- 8. Multiple Choice
Which of the following is a heterogeneous mixture?
air
salt water
steel
soil
- 9. Multiple Choice
Which of the following is classified as a mixture?
pure water
pure air
pure nitrogen
pure gold
- 10. Multiple Choice
Which of the following is true about homogeneous mixtures?
Known as solutions
Consist of two or more phases
Have compositions that vary
Are always liquid
- 11. Multiple Choice
A substance that can be separated into two or more substances only by a chemical change is a(n)_____.
solution
element
mixture
compound
- 12. Multiple Choice
A physical blend of two or more components?
product
phase
reactant
mixture
- 13. Multiple Choice
Describes a mixture with a uniform composition.
heterogeneous
compound
homogeneous
chemical reaction
- 14. Multiple Choice
A substance that cannot be changed into simpler substances by chemical means.
compound
distillation
mass
element
- 15. Multiple Choice
An example of a homogeneous mixture is
distilled water.
oxygen.
noodle soup.
stainless steel.
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