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- 1. Multiple ChoiceTwo or more substances mingled together, but not chemically combined are known as aresiduesolutiondistillatemixture
- 2. Multiple ChoiceSand and gravel may be separated from each other through using..a filter funnela sievean evaporating basina distillation
- 3. Multiple Choice
Which of the following pairs of substances may best be separated through distillationsand and soilwater and soilsalt and sandwater and alcohol - 4. Multiple ChoiceWhich one of the following techniques would best be used to separate soil and water?DecantingdistillationFiltrationChromatography
- 5. Multiple ChoiceName the separation technique shown in the diagram.evaporationdistillationfiltrationdecanting
- 6. Multiple ChoiceSodium chloride can be separated from rock salt by first adding water to the mixture to dissolve the sodium chloride. The separation then takes place in two stages:evaporation followed by filtrationdistillation followed by decantingfiltration followed by evaporationfiltration followed by decanting
- 7. Multiple ChoiceWhich one of the following would you use to separate sand from iron filings?a bar magnetfilter paperchromatography paperalum
- 8. Multiple ChoiceWater and alcohol are easily separated by distillation because of theirdifferent melting pointsdifferent coloursdifferent densitiesdifferent boiling points
- 9. Multiple ChoiceLiquids that do not mix may be separated by using..an evaporating disha separating funnela loadinga sedimentation
- 10. Multiple ChoiceMaking a mixture results in ___________________ only.chemical reactionsseparate partsphysical changestwo subtances
- 11. Multiple ChoiceTo separate iron filings and sulfur what method should you use?filtrationsortingmagnetboiling
- 12. Multiple ChoiceWhich of the following is a method of separating solutions?hand separationfilteringdecantingevaporation
- 13. Multiple ChoiceHow would you separate the ingredients of mixture Z?WaterA magnetA sieveMy hands
- 14. Multiple ChoiceHow would you separate a mixture of sand and salt?Mix them with water and let the water evaporateMix them with water, pour the mixture through a sieve, then let the water evaporateHeat the sand and salt mixture for 5 minutes, then let it coolI would not do any of these because none of these options would work
- 15. Multiple ChoiceThe diagram shows the chromatogram for three colouring dyes and that for a brown marker. What dye(s) are contained in the marker's ink?purple and greenpurple and yellowpurple onlygreen and yellow
- 16. Multiple ChoiceWhich one of the following is NOT a mixture?SugarPaintCrude oilAir
- 17. Multiple ChoiceWhich mixture could you separate by adding water and then pouring through a coffee filter?sand and salt, because the salt would dissolve and the sand would notbaking soda and salt, because they both dissolvesugar and salt, because they both dissolveiron fillings and sand, because neither one dissolves
- 18. Multiple ChoiceOn the chromatogram given -------------- is mixture.redorangegreenblack
- 19. Multiple ChoiceA pure substance shows ------------------ spot on chromat gram0123
- 20. Multiple ChoiceLook at the apparatus setup. It cannot be used to separate which of the following mixtures?Marble chips from oilAlcohol and waterChalk from sugar solutionSand and sea water
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