Which of the following mixtures could not be separated into its components by decanting?
Beans in hot water
Sand in water
Coffee in hot water
None of the above
Pick out the odd one. Evaporation, magnetic separation, condensation, crystallisation.
Magnetic separation
Condensation
Crystallisation
Evaporation
A compound has
Only one kind of atom
Only one kind of element
A mixture of elements and molecules
Only one kind of molecules
Which one of the following is a disadvantage of evaporation?
It always requires heat.
All of the solute is recovered.
The solvent is recovered.
It cannot be used for insoluble solids.
The diagram shows the apparatus for separating soil and water. What are the labelled parts?
A - Residue; B - Filtrate
A - Filtrate; B - Residue
A - Distillate; B - Filtrate
A - Residue; B - Distillate
A pure substance is made up of
Two or more kinds of molecules
Different types of molecules
None
Liquids that do not mix may be separated by using
a filter funnel
an evaporating dish
a separating funnel
condenser
Wheat flour is separated from wheat bran by the method of
Hand picking
Sieving
Winnowing
Filtration
Impurities like bran, worms, tiny insects from flour can be separated by
winnowing
handpicking
sieving
filtration
To separate a mixture of two or more gases ______ method is used
Sedimentation
Liquification
Distillation
Decantation
