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4. Explain the following giving examples.(a) saturated solution(b) pure substance(c) colloid(d) suspension5. Classify each of the following as a homogeneous or heterogeneous mixture.soda water, wood, air, soil, vinegar, filtered tea.6. How would you confirm that a colourless liquid given to you is pure water?7. Which of the following materials fall in the category of a "pure substance"?(a) Ice(b) Milk(c) Iron(d) Hydrochloric acid(e) Calcium oxide(1) Mercury(g) Brick(h) Wood(i) Air |
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Answer» Answer:
depend upon the amount of solute present in solvent, it is called dilute concentration for a saturated solution 2. PURE substance- pure substance it means that all the when particle of the substance are the same in chemical teacher .it is present in fixed proportion 3. colloid- soil is a HETEROGENEOUS mixture but it appears as homogeneous, it cannot be seen by nacked eyes do not SETTLE down 4. suspension- it is a heterogeneous mixture in which solute particles do not dissolve it can be classified by naked eyes settle down when kept undisturbed Q5)soda water,air,vinegar, filtered tea =homogeneous wood,soil=heterogeneous Q6) water is a pure liquide because it propertion of molecule is everytime fixed Q7) ice,iron,hydrochloric acid,CALCIUM oxide, murcury =pure substance milk,brick,wood,air=impure substance |
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