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JCS15 Quiz

Homeschool Covey 13 questions

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Questions in this quiz (13)

  1. 1There are various techniques used for separating mixtures.

    What is the definition of a mixture?
    1. AA substance made up of only one type of atom.
    2. BTwo or more substances mingled together but not chemically combined.
    3. CA substance composed of two or more atoms chemically combined.
    4. DA substance composed of two or more different elements chemically combined.
  2. 2When a substance or mixture is not contaminated or polluted by any unwanted substance it is said to be....
    1. AImpure
    2. BClean
    3. CConcentrated
    4. DPure
  3. 3The method used to separate mixtures will depend on the mixture and its components.
    Select three separation methods from the list.
    1. AColour of components
    2. BParticle size of components
    3. CAttraction to other substances
    4. DBoiling point of the solute or solvent
    5. EWater content
  4. 4What method would be used to separate an insoluble solid from a liquid or gas?
    1. AChromatography
    2. BFiltration
    3. CDistillation
    4. DEvaporation
  5. 5What is the name of the insoluble solid left in the filter after filtration?
    1. AWaste
    2. BFiltrate
    3. CDistillate
    4. DResidue
  6. 6Separation by particle mass: In a mixture of an [blank_start]insoluble[blank_end] solid and a liquid, the mass of the solid is often big enough that the solid will [blank_start]sink[blank_end] to the bottom of the container it it is left and not shaken or stirred. This is called [blank_start]settling[blank_end] or sedimentation. This process is used in [blank_start]water[blank_end] treatment. To speed up the settling, aluminium sulphate is often added to the water. This causes the [blank_start]solids[blank_end] to clump together so they sink quicker this process is called [blank_start]flocculation[blank_end]

    1. Ainsoluble
    2. Bsoluble
    3. Csink
    4. Dfloat
    5. Esettling
    6. Fwater
    7. Gfood
    8. Hflocculation
    9. Isolids
    10. Jliquid
    11. Kgas
  7. 7Temperature can be used to separate a dissolved solid from a solution in two ways: by distillation and evaporation.
    Which of these statements about distillation and evaporation is false?
    1. AIn both distillation and evaporation the dissolved solid (residue) remains afterwards.
    2. BIn both distillation and evaporation the residue is the solute.
    3. CIn distillation the vapour is collected and condensed, in evaporation the vapour is not collected or condensed.
    4. DDistillation requires little heat energy, evaporation requires a lot of heat energy.
  8. 8Miscible liquids are ones that can mix together.

    What method is used to separate two miscible liquids?
    1. AEvaporation
    2. BFiltration
    3. CDistillation
    4. DChromatography
  9. 9There are techniques for separating mixtures that involve separation by attraction to other substances these include adsorption, chromotography and capillarity.

    What is adsorption?
    1. AThe attraction of a substance to the surface layer of another substance.
    2. BThe process by which water particles stick to each other and to the walls of narrow tubes, which causes water to rise in tubes.
    3. CAllowing undissolved solids in a solution to sink to the bottom of the container.
    4. DUsing chemicals to cause solids to clump together and sink.
  10. 10Capillarity is the ability of a [blank_start]liquid[blank_end] to travel up a narrow tube. One of the reasons this happens is that the water particles are attracted to the [blank_start]particles[blank_end] the tube is made of as well as to each other. Capillary [blank_start]action[blank_end] is one of the ways that water travels up through a [blank_start]plant[blank_end]
    from its roots. It is also an important part of a separation technique called [blank_start]chromatography[blank_end]
    .
    1. Aliquid
    2. Bsolid
    3. Cgas
    4. Dparticles
    5. Esolution
    6. Faction
    7. Gplant
    8. Hchromatography

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Description
UK CAT Science Quiz on JCS15 Quiz, created by Homeschool Covey on 02/02/2022.
Language
English
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