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CBSE - Class 9 Science Is Matter Around Us Pure Worksheet

1.
Classify each of the following as a homogeneous or heterogeneous mixture. soda water, wood, air, soil, vinegar, filtered tea.
2.
Classify the following into elements, compounds and mixtures. (l) Carbon dioxide
3.
Identify the solutions among the following mixtures. (e) Soda water
4.
Which separation techniques will you apply for the separation of the following? (d) Different pigments from an extract of flower petals
5.
Which of the following materials fall in the category of a “pure substance”? (f) Mercury
6.
Classify the following into elements, compounds and mixtures. (e) Calcium carbonate
7.
Write the steps you would use for making tea. Use the words solution, solvent, solute, dissolve, soluble, insoluble, filtrate and residue.
8.
Which of the following materials fall in the category of a “pure substance”? (e) Calcium oxide
9.
Which of the following materials fall in the category of a “pure substance”? (g) Brick
10.
Which separation techniques will you apply for the separation of the following? (j) Fine mud particles suspended in water
11.
Which of the following materials fall in the category of a “pure substance”? (d) Hydrochloric acid
12.
Classify the following into elements, compounds and mixtures. (f) Tin
13.
Which separation techniques will you apply for the separation of the following? (i) Wheat grains from husk
14.
Which of the following materials fall in the category of a “pure substance”? (h) Wood
15.
Which of the following materials fall in the category of a “pure substance”? (b) Milk
16.
Which separation techniques will you apply for the separation of the following? (h) Iron pins from sand
17.
Explain the following giving examples. (b) Pure substance
18.
Classify the following into elements, compounds and mixtures. (g) Silicon
19.
Classify the following into elements, compounds and mixtures. (h) Coal
20.
Explain the following giving examples. (c) Colloid

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