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Worksheetsseperation of substance
Total questions: 17
Worksheet time: 9mins
6. The density of water is 1g/cc. Mercury is denser and kerosene is less dense than water. None of the liquids mix with each other. What will a jar that has 20 ml of water, 10 ml of mercury and 30 ml of kerosene look like?
A
B
C
D
5.A solution in which no more solute can be added is called
True Solution
Unsaturated solution
Saturated solution
Mixture
4.When do we mostly use handpicking?
When we separate stones from rice
When we separate water from sand
When we separate sugar from water
ALL of the above
the process of converting a liquid form to its vapour form is
Decantation
Condensation
Sedimentation
Evaporation
During _________________ the solid particles that settle down forming a layer are called sediments
Decantation
Condensation
Evaporation
sieving
Sedimentation
Match the following
If the components of a mixture are of different sizes, they can be separated by
Sieving
The process of separating the grains from the stalks of plants is known as
Threshing
When the visible unwanted particles are removed by hand, the process is called
Hand Picking
The process of separating lighter components like husk from heavier components such as Wheat by wind is known as
Winnowing
"To separate husk from rice" What process is used?
Boiling
Winnowing
Grinding
Baking
What is an energy change?
An energy change refers to the process of energy being converted from one form to another, or transferred from one object to another.
An energy change is the process of energy disappearing
What is a physical change?
Lemonade is a special mixture called a
substance
solution
plasma
ingredient
What is a mixture?
A chemical combination of two or more different substances.
A physical combination of two or more different substances.
A chemically pure substance.
A special type of solution
When the solute dissolves into a solvent and disappears it is called a _____________.
MIxture
Solution
Solvent
None of the above
How are grain seeds removed from their stalks?
Sieving
Winnowing
Threshing
All of the above
what is the correct meaning of solubility
can dissolve more solute
is an other name for filtrate
amount of solute that can dissolve in a given amount of solvent
none of the above
what name is given to the solid left on the filter paper ?
the filtrate
the resident
the product
the residue
in construction sites, people use similar sieves to separate pebbles and stones from -------------------
mud
water
flour
sand
------------------------------ is the process of separating heavier and lighter components of a mixture
handpicking
threshing
winnowing
sieving
