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Problem 1.11

Problem 1.11. Do the following statements describe chemical or physical properties? Oxygen gas supports combustion Fertilizers help to increase agricultural production Water boils below 100°C on top of a mountain Lead is denser than aluminum Sugar tastes sweet. Chemical. Chemical.

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Problem 1.11

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  1. Problem 1.11 Do the following statements describe chemical or physical properties? • Oxygen gas supports combustion • Fertilizers help to increase agricultural production • Water boils below 100°C on top of a mountain • Lead is denser than aluminum • Sugar tastes sweet Chemical Chemical Physical Physical Chemical

  2. Problem 1.12 Does each of the following describe a physical change or a chemical change? • The helium gas inside a balloon tends to leak out after a few hours • A flashlight beam slowly gets dimmer and finally goes out • Frozen orange juice is reconstituted by adding water to it • The growth of plants depends on the sun’s energy in a process called photosynthesis • A spoonful of table salt dissolves in a bowl of soup Physical Chemical Physical Chemical Physical

  3. Problem 1.13 • Give the names of the elements represented by the chemical symbols: Li

  4. 3 lithium 6.941 Problem 1.13 • Give the names of the elements represented by the chemical symbols: Li

  5. Problem 1.13 • Give the names of the elements represented by the chemical symbols: F

  6. Problem 1.13 • Give the names of the elements represented by the chemical symbols: 9 F fluorine 19.00

  7. Problem 1.13 • Give the names of the elements represented by the chemical symbols: P

  8. Problem 1.13 • Give the names of the elements represented by the chemical symbols: 15 P phosphorus 30.97

  9. Problem 1.13 • Give the names of the elements represented by the chemical symbols: Cu

  10. 29 copper 63.55 Problem 1.13 • Give the names of the elements represented by the chemical symbols: Cu

  11. Problem 1.13 • Give the names of the elements represented by the chemical symbols: As

  12. Problem 1.13 • Give the names of the elements represented by the chemical symbols: 33 As arsenic 74.92

  13. Problem 1.13 • Give the names of the elements represented by the chemical symbols: Zn

  14. Problem 1.13 • Give the names of the elements represented by the chemical symbols: 30 Zn zinc 65.39

  15. Problem 1.13 • Give the names of the elements represented by the chemical symbols: Cl

  16. Problem 1.13 • Give the names of the elements represented by the chemical symbols: 17 Cl chlorine 35.45

  17. Problem 1.13 • Give the names of the elements represented by the chemical symbols: Pt

  18. Problem 1.13 • Give the names of the elements represented by the chemical symbols: 78 Pt platinum 195.1

  19. Problem 1.13 • Give the names of the elements represented by the chemical symbols: Mg

  20. Problem 1.13 • Give the names of the elements represented by the chemical symbols: 12 Mg magnesium 24.31

  21. Problem 1.13 • Give the names of the elements represented by the chemical symbols: U

  22. Problem 1.13 • Give the names of the elements represented by the chemical symbols: 92 U uranium 238.0

  23. Problem 1.13 • Give the names of the elements represented by the chemical symbols: Al

  24. Problem 1.13 • Give the names of the elements represented by the chemical symbols: 13 Al aluminum 26.98

  25. Problem 1.13 • Give the names of the elements represented by the chemical symbols: Si

  26. Problem 1.13 • Give the names of the elements represented by the chemical symbols: 14 Si silicon 28.09

  27. Problem 1.13 • Give the names of the elements represented by the chemical symbols: Ne

  28. Problem 1.13 • Give the names of the elements represented by the chemical symbols: 10 Ne neon 20.18

  29. Problem 1.14 Give the chemical symbols for the following elements: • potassium • tin • chromium • boron • barium • plutonium • sulfur • argon • mercury K Sn Cr B Ba Pu S Ar Hg

  30. Problem 1.15 Classify each of the following substances as an element or a compound: • hydrogen • water • gold • sugar

  31. Problem 1.15 Classify each of the following substances as an element or a compound: • hydrogen • water • gold • sugar elements in yellow

  32. Problem 1.16 Classify each of the following as an element, a compound, a homogeneous mixture, or a heterogeneous mixture. • seawater • helium gas • sodium chloride • a bottle of soft drink • a milkshake • air in a bottle • concrete homogeneous mixture element compound homogeneous mixture heterogeneous mixture homogeneous mixture heterogeneous mixture

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