Last seen: Jan 25, 2021
(d) all of these
(b) crystallisation
(a) aerosol
Chemical changes are: (a) Growth of a plant (b) Rusting of iron (c) Cooking of food (d) Digestion of food (e) Burning of a candle
Elements – Compounds – Mixtures Sodium – Calcium carbonate – Sugar solution Silver – Methane – Soil Tin – Carbon dioxide – Coal Silicon – Soa...
Milk and starch solution.
Solutions are: Sea water soda water and air.
Pure substances are: Ice, iron, hydrochloric acid, calcium oxide and mercury.
By finding the boiling point of a given colourless liquid. If the liquid boils at 100°C at atmospheric pressure, then it is pure water. This is becaus...
Homogeneous: Soda water, vinegar, filtered tea. Heterogeneous: Wood, air, soil.
(a) Saturated solution: In a given solvent when no more solute can dissolve further at a given temperature is called saturated solution. (b) Pure s...
1. Take a cup of water in a container as solvent and heat it. 2. Add sugar in it which is solute. Heat it till all sugar dissolves. 3. You get a...
(a) Evaporation (b) Sublimation (c) Filtration (d) Chromatography (e) Centrifugation (f) Separating funnel (g) Filtration (h) Mag...
Pure substances: Water, bread, sugar and gold. Mixtures: Steel, plastic, paper, talc, milk and air.
Physical changes (i) cutting of trees (ii) melting of butter in a pan (iv) boiling of water to form steam (vi) dissolving common salt in water...