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WorksheetsMixtures and solution
Total questions: 15
Worksheet time: 8mins
A mixture is a combination of two or more substances in which no new substances are formed.
Ture
False
According to particle model, the diagram shows a:
Mixture
Pure substance
Explain why sea water is a mixture whereas purified water is not?
(a)
Identify what mixtures can be made from.
Gases only
Solid, liquids and gases
Liquids and gases, but not solids
Liquids only
Select the statement that best describes a mixture of eggs and air while being whisked.
The longer eggs are whisked, the more solid they become. This is because more air is being added to the mixture.
The amount of time spent whisking eggs makes no difference to the mixture. Its properties don’t change.
The longer eggs are whisked, the fluffier they become. This is because more air is being added to the mixture.
The suspended particles in colloids are smaller than the suspended particles in suspensions.
True
False
Identify which of the following sentences are true.
Suspensions do not separate into their components if left to stand
Colloids separate into their components if left to stand
Suspensions separate into their components if left to stand
None of these are true
Determine which two words complete the sentence correctly.
If small particles of rock mixed in water are ____________ enough, they will settle out as ____________ .
large, sediment
small, sediment
small, colloid
large, emulsion
Complete the following sentence.
A solution is a type of mixture in which the particles:
are extremely small
can be seen under a powerful microscope
scatter light
settle out to form a sediment
Identify which list orders the three types of mixtures from largest to smallest particle size.
Solutions, colloids, suspensions
Suspensions, solutions, colloids
Colloids, suspensions, solutions
Suspensions, colloids, solutions
Grease dissolves in petrol. Identify which statement is correct.
Grease is the solute and petrol is the suspension
Grease is the solute and petrol is the solvent
Grease is the sediment and petrol is the solution
Grease is the solvent and petrol is the solute
Identify which of the following mixtures is not solution.
Fizzy lemonade
Sea water
Mud
Air
Determine whether the following statement is true or false.
The concentration of a solution is the amount of solute compared to the amount of solution.
True
False
Identify what happens to solute that is added to a saturated solution.
Crystals form
It dissolves
It settles as sediment
Arsenic is a poisonous substance that sometimes gets into water supplies. The official safe level is 0.007 milligrams per litre (mg/L). A town water supply has a reading of 0.02 mg/L.
Determine whether it is safe to drink the water from the town supply.
The town supply is safe to drink
The town supply is unsafe to drink
