ICSE Class 6 Chemistry - Pure Substances and Mixtures - Test 1 (Basic)
1. A pure substance contains:
A. Many different substances mixed together
B. Only one kind of substance
C. Only visible particles
2. Which of the following is a pure substance?
A. Gold
B. Soil
C. Lemonade
3. A mixture is formed when substances are:
A. Changed into light
B. Always burned together
C. Physically mixed together
4. Which of the following is a mixture?
A. Copper
B. Salt water
C. Oxygen
5. Which statement is true about a compound?
A. It is a pure substance
B. It is always a visible mixture
C. It is made only by shaking substances
6. Air is an example of a:
A. Pure element
B. Single compound
C. Mixture
7. Pure water is classified as a:
A. Mixture only
B. Pure substance
C. Physical blend
8. The components of a mixture can often be separated by:
A. Physical methods
B. Changing them into elements
C. Making them disappear
9. Sand and sugar mixed together form a:
A. Pure element
B. Chemical compound
C. Mixture
10. Which one is not a mixture?
A. Tea
B. Iron
C. Muddy water
11. A mixture that looks the same throughout is called:
A. Homogeneous mixture
B. Broken mixture
C. Solid mixture only
12. A mixture with visibly different parts is called:
A. Pure substance
B. Compound only
C. Heterogeneous mixture
13. Which is an example of a homogeneous mixture?
A. Sand and stones
B. Sugar solution
C. Rice and pulses
14. Which is an example of a heterogeneous mixture?
A. Vegetable salad
B. Salt solution
C. Clean water
15. In a mixture, the substances usually:
A. Lose all their properties
B. Always form a new compound
C. Keep their own properties
16. Common salt is best described as a:
A. Mixture of many visible parts
B. Pure substance
C. Heterogeneous mixture
17. Muddy water is a mixture because it contains:
A. Mud and water mixed together
B. Only one pure substance
C. Only oxygen gas
18. Which statement is correct?
A. Mixtures always have fixed composition
B. Pure substances are always made by handpicking
C. Pure substances have fixed composition
19. Iron filings can be separated from sand using a:
A. Thermometer
B. Magnet
C. Dropper
20. Ordinary drinking water is usually a:
A. Mixture
B. Pure element
C. Metal