WorksheetsIs matter around us pure
Total questions: 10
Worksheet time: 5mins
If we put camphor in an open container, its amount keeps on decreasing due to the phenomenon of
Evaporation
Precipitation
Condensation
Sublimation
The components of water can be separated by
Physical methods
Chemical methods
Both
They can't be separated
Mixture can be
Homogeneous
Heterogeneous
Both (a) and (b)
Pure substance
What is mixture?
Mixtures are constituted by one
kind of pure form of matter.
Mixtures are constituted by more than one
kind of Impure form of matter.
Mixtures are constituted by more than one
kind of pure form of matter.
Mixtures are constituted by one
kind of impure form of matter.
Heterogeneous mixture in which the solute particles do not dissolve and remain suspended throughout the solvent and the solute particles can be seen with the naked eye is known as:
Colloidal solution
Super saturated solution
Sublimation
Suspensions
A pure substance which is made up of only one kind of atom and cannot be broken into two or more simpler substances by physical or chemical means is referred to as
a compound
an element
a molecule
a mixture
How one can separate ammonium chloride from a mixture containing ammonium chloride and sodium chloride?
Precipitation
Sublimation
Chromatography
Centrifugation
According to the definition of pure substance, which of the following is a pure substance?
Ice
Mercury
Iron
All of these
Particles of which are visible to naked eyes
Mixture
Colloidal solution
Suspension
None of the above
White gold is used in jewelry and contains two elements, gold and palladium. A jeweler has two different samples that are both identical in appearance and have a uniform composition throughout. What can be said about the samples?
They are homogeneous mixtures and be classified as metallic alloys.
The materials are heterogeneous mixtures and can be classified by their components.
The samples have variable compositions and are classified as metallic solutions.
The samples are heterogeneous mixtures that can be separated using magnetic properties.
