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1. Matter that always has exactly the same composition is

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Presentation on theme: "1. Matter that always has exactly the same composition is"— Presentation transcript:

1 1. Matter that always has exactly the same composition is
A) a heterogeneous mixture. B) a homogeneous mixture. C) a solution. D) a pure substance.

2 Correct !! Next Question

3 B) homogeneous mixture. C) suspension. D) compound.
2. A mixture with parts that are so evenly distributed that it is difficult to distinguish one substance from another is a A) colloid. B) homogeneous mixture. C) suspension. D) compound.

4 Correct !! Next Question

5 3. A substance that cannot be broken down into simpler substances is
A) a compound. B) an element. C) a solution. D) a mixture.

6 Correct !! Next Question

7 4. Two examples of pure substances are
A) copper and soda. B) air and water. C) aluminum and table salt. D) tap water and oxygen.

8 Correct !! Next Question

9 5. If a substance must be shaken before use it would most likely be
A) a compound. B) an element. C) a colloid. D) a suspension.

10 Correct !! Next Question

11 6. Which of the following is a false statement.
A) The particles of a solution are the smallest of heterogeneous mixtures. B) The particles of a suspension settle out over time. C) The particles of a colloid settle out over time. D) The size of the particles of a colloid are between the size of those found in solutions and suspensions.

12 Correct !! Next Question

13 7. Which of the following is a compound?
A) Si B) KI C) Bi D) Li

14 Correct !! Next Question

15 8. Sand is an example of a A) compound. B) homogeneous mixture.
C) solution. D) heterogeneous mixture.

16 Correct !! Next Question

17 9. The symbol for silver is
A) Ag B) AG C) ag

18 Correct !! Next Question

19 10. Coffee is an example of A) an element. B) a compound. C) a homogeneous mixture. D) a colloid.

20 Correct !! Next Question

21 11. Which of the following is an example of a homogeneous mixture?
B) tap water C) gold D) a can of mixed nuts

22 Correct !! Next Question

23 12. According to the table, nitrogen would be a liquid at
B) -194°C C) -196°C

24 Correct !! Next Question

25 13. All are physical properties except
A) hardness. B) viscosity. C) density. D) reactivity.

26 Correct !! Next Question

27 14. The type of change in which the composition of the material changes chemically is a
A) physical change. B) chemical change.

28 Correct !! Next Question

29 15. Which of the following is not evidence that a chemical change may have occurred?
A) formation of a precipitate B) change of shape C) formation of a gas D) change of color

30 Correct !! Next Question

31 16. A solid has a high melting point, is hard and malleable is most likely to be
A) glass. B) putty. C) iron. D) plastic.

32 Correct !! Next Question

33 17. Since both have particles small enough to pass through paper, the method used to separate two liquids is A) distillation. B) filtration.

34 Correct !! Next Question

35 18. A material’s resistance to flow is
A) conductivity. B) viscosity. C) hardness. D)malleability.

36 Correct !! Next Question

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