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Is matter around us pure?

Classify each of the following as a homogeneous or heterogeneous mixture.
soda water, wood, air, soil, vinegar, filtered tea.

Is matter around us pure?

Explain the following giving examples.
(a) Saturated solution
(b) Pure substance
(c) Colloid
(d) Suspension

Is matter around us pure?

Write the steps you would use for making tea. Use the words
solution, solvent, solute, dissolve, soluble, insoluble, filtrate
and residue.

Is matter around us pure?

Which separation techniques will you apply for the separation
of the following?
(a) Sodium chloride from its solution in water
(b) Ammonium chloride from a mixture containing sodium
chloride and ammonium chloride
(c) Small pieces of metal in the engine oil of a car
(d) Different pigments from an extract of flower petals
(e) Butter from curd
(f) Oil from water
(g) Tea leaves from tea
(h) Iron pins from sand
(i) Wheat grains from husk
(j) Fine mud particles suspended in water

Is matter around us pure?

Try segregating the things
around you as pure substances
or mixtures

Is matter around us pure?

Classify the following as chemical
or physical changes:
• cutting of trees,
• melting of butter in a pan,
• rusting of almirah,
• boiling of water to form steam,
• passing of electric current,
through water and the water
breaking down into hydrogen
and oxygen gases,
• dissolving common salt in
water,
• making a fruit salad with raw
fruits, and

• burning of paper and wood.

Is matter around us pure?

To make a saturated solution, 36 g of sodium chloride is dissolved in 100 g of water
at 293 K. Find its concentration at this temperature.

Is matter around us pure?

How are sol, solution and suspension different from each other?

Is matter around us pure?

Differentiate between homogen eous and heterogeneous mixtures with examples.

Is matter around us pure?

List the points of differences
between homogeneous and
heterogeneous mixtures.