2. Read pages a. Answer the five Reading Check questions on page 47

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1 Chemistry Test #1 Review Chapters 1 & 2 1. Page 37, #4-6, 8, 9, 13, Read pages a. Answer the five Reading Check questions on page Read pages a. Copy the table on page 55 b. Define what malleable and ductile mean (on page 22) c. Answer the five Reading Check questions on page Complete the following Check Your Understanding questions on page 63, #1 3, 5, 6, 11 14, 17, 18, 20 22, 25, Answer the three Reading Check questions on page Complete the following Check Your Understanding questions on page 71, #2 4, 6 8, 11, 12, 14, Complete the following Chapter Review questions on pages 72/3, #3 7, 9 22, 27, 28 Chemistry Test #1 Review Chapters 1 & 2 1. Page 37, #4-6, 8, 9, 13, Read pages a. Answer the five Reading Check questions on page Read pages a. Copy the table on page 55 b. Define what malleable and ductile mean (on page 22) c. Answer the five Reading Check questions on page Complete the following Check Your Understanding questions on page 63, #1 3, 5, 6, 11 14, 17, 18, 20 22, 25, Answer the three Reading Check questions on page Complete the following Check Your Understanding questions on page 71, #2 4, 6 8, 11, 12, 14, Complete the following Chapter Review questions on pages 72/3, #3 7, 9 22, 27, 28

2 KEY to Test Review Questions 1. Page 37, #4-6, 8, 9, 13, Atoms of gold and lead would have different sizes and masses and might link together in different kinds of ways 5. J. J. Thomson discovered that atoms were themselves made up of other particles, such as the electron 6. Rutherford s gold foil experiment led to the discovery of the nucleus, the dense, positively charged centre of an atom 8. Protons and neutrons 9. Electrons 13. a) Proton b) Neutron or Proton c) Electron d) Proton e) Electron f) Neutron g) Electron h) Neutron 14. Atoms have equal numbers of protons and electrons 2. Read pages a. Answer the five Reading Check questions on page Unlike iron, sodium melts at a low temperature, is soft, and is highly reactive in water 2. Iron is strong and can be made stronger by adding carbon 3. Mercury is the only metal that is liquid at room temperature 4. Chlorine is added to water to kill bacteria. Chlorine also combines with sodium to make table salt 5. Silver can be polished and moulded and is both malleable and ductile, making it useful for jewellery. Its conductivity makes it useful in electronics

3 3. Read pages a. Copy the table on page 55 b. Define what malleable and ductile mean (on page 22) c. Answer the five Reading Check questions on page Atomic number, atomic mass, ion charge(s) 2. a) 14 b) 24 c) From lightest to heaviest: carbon (12.0), calcium (40.1), nickel (58.7), cobalt (58.9), zinc (55.4) a) Metals are located on the left side b) Non-metals are located on the right side c) Metalloids form a diagonal line toward the right side, between the metals and non-metals 4. Complete the following Check Your Understanding questions on page 63, #1 3, 5, 6, 11 14, 17, 18, 20 22, 25, The periodic table is a chart that organizes the elements according to their physical and chemical properties 2. Atomic number = number of protons in each atom of the element 3. Atomic number 5. An atom of potassium 6. Atomic mass is the mass of an atom of an element. 11. Ion charge is an electric charge that forms on an atom when it gains or loses electrons 12. An electron 13. a) Positive b) Negative 14. These elements do not form ions 17. Metals, non-metals, and metalloids 18. a) Alkali metals, alkaline earth metals, halogens, and noble gases b) Alkali metals and alkaline earth metals c) Halogens and noble gases 20. Periods 21. Families or groups 22. Alkali metals 25. Chemically unreactive, gases, colourless 26. Atomic number is the number of protons in the nucleus, and it is always a whole number. Atomic mass is a measure of the weight or mass of an average atom of an element and is written as a decimal number

4 5. Answer the three Reading Check questions on page , 8, 8, a) Hydrogen b) Lithium c) Sodium d) Potassium 3. a) 1 b) 2 c) 7 d) 8

5 6. Complete the following Check Your Understanding questions on page 71, #2 4, 6 8, 11, 12, 14, a) Carbon b) Fluorine c) Magnesium d) Sulfur 3. a) An electron shell is a region surrounding the nucleus of an atom that can contain electrons b) 2, 8, 8, , 8, 8 6. Neon 7. Argon 8. The valence shell is the outermost occupied shell in an atom, while a valence electron is an electron that occupies this shell 11. Noble gases have filled valence energy levels 12. a) Metal atoms lose their valence electrons, revealing a filled electron shell below it. b) Non-metal atoms gain electrons until their valence electron shell is filled 14. a) Neon b) Nitrogen c) Magnesium

6 15. a) Argon b) P P 3- c) S S 2-

7 d) Cl Cl - e) K K + f) Ca Ca 2+

8 7. Complete the following Chapter Review questions on pages 72/3, #3 7, 9 22, 27, a) Phosphorus b) Beryllium c) Potassium d) Cobalt 4. a) He b) Li c) B d) Mg e) Ca 5. Mercury and bromine 6. Shiny, silver coloured, malleable, ductile, conduct electricity, conduct heat 7. a) Carbon, other metals b) Steel 9. Periodic table 10. Atomic mass measures the mass of an atom of the element 11. Number of protons = atomic number 12. A chemical family is a group of elements that have similar chemical and physical properties. They occur in columns of the periodic table 13. Alkali metals, alkaline earth metals, halogens, noble gases 14. Less reactive 15. They are unreactive 16. A Bohr model represents the arrangement of electrons in an atom 17. a) The valence shell is the outermost occupied electron shell in an atom b) A valence electron is an electron that occupies the valence shell 18. a) 1 b) 3 c) 6 d) a) Noble gases b) Their filled valence shells make the atoms of the noble gases unreactive 20. Chemistry is the study of matter and its changes 21. Atomic numbers increase from left to right and from top to bottom through the periodic table. 22. a) 51 b) 33 c) 13 d) 34

9 27. a) Be b) Mg c) Ca 28. a) Aluminum b) Silicon c) Fluorine d) Neon