Identify the solutions among the following mixtures.
(b) Sea water
(e) Soda water
The following are the solutions from the above-mentioned list of mixture:
Which of the following are chemical changes?
(a) Growth of a plant
(b) Rusting of iron
(c) Mixing of iron filings and sand
(d) Cooking of food
(e) Digestion of food
(f) Freezing of water
(g) Burning of candle
Classify the following into elements, compounds and mixtures.
(c) Sugar solution
(e) Calcium carbonate
(l) Carbon dioxide
Which of the following will show the “Tyndall effect”?
(a) Salt solution
(c) Copper sulphate solution
(d) Starch solution.
Which of the following materials fall into the category of "pure substance"?
(d) Hydrochloric acid
(e) Calcium oxide
How would you confirm that a colourless liquid given to you is pure water?