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WorksheetsClass IV A: Science
Total questions: 24
Worksheet time: 34mins
Sangay wants to dissolve a substance in water. Which substance will dissolve the easiest?
sugar
pepper
sand
Which is NOT a human activity that contributes to water pollution?
Dumping waste
Waste from factories
Water flood
What mixture could you use this tool to best separate that mixture?
Sugar and Salt
Sand and rocks
Apples and grapes
A mixtures is a combination of two or more____________ in which no new kinds of matter are formed.
subtances
parts
pebbles
A fruit salad is a
mixture
solution
Which one of the following methods would best be used to separate soil and water?
decanting
sedimentation
filtration
Solid particles which are left on filter paper while filtration is called
filtrate
residue
sediments
The separation method shown at the right is
filtration
sedimentation
decantation
Look at the apparatus setup. It cannot be used to separate which of the following mixtures?
chalk powder and water
sugar and water
sand and water
If I pour sand and water onto a filter, what will happen?
water and sand will go through the filter
sand will get collected in the filter, water will pass through
both sand and water will get caught in the filter
Milk and water is (a) mixture.
Substances that dissolve in liquids are called (a) .
Gold is an example of (a) substance.
This type of mixture is (a) mixture.
Dissolving of salt in water is a solid-liquid mixture.
False
True
Sand and clay are an example of a mixture of solids.
True
False
Tap water is safe for drinking.
TRue
False
Air is pure substance.
True
False
A mixture must have at least two different materials.
True
False
Following are the steps to obtain clear water from a bucket of muddy water. Arrange the steps in correct order.
(filtration, sedimentation, decantation)
Why decantation can not can not be sued to separate the mixture of salt and water?
Why is it important to boil and filter water before drinking?
Write an example for each following mixture
1. solid-solid,
2. solid-liquid and
3. liquid-liquid mixture.
Differentiate between soluble and insoluble substances with an example.
