Chapter 8

1. Chapter 8 Review

2. Chapter 8 Review • How is a period set up on the periodic table? • Answer: left to right/horizontally

3. Chapter 8 Review • What is a catalyst? • Answer = something that speeds up a reaction without ever changing itself.

4. Chapter 8 Review • What are some properties of metals? • Answer = has luster, good conductor of heat and electricity, is malleable and is ductile.

5. Chapter 8 Review • Where are the representative elements on the periodic table? • Answer = Groups 1-2 and groups 13-18

6. Chapter 8 Review • What are some properties of nonmetals? • Answer = Nonmetals are usually gases or brittle solids at room temperature. They are poor conductors of heat and electricity.

7. Chapter 8 Review • What is a metalloid? • Answer = Metalloids share some properties with metals and some with nonmetals. They fall in a diagonal line directly between metals and nonmetals on the periodic table.

8. Chapter 8 Review • How is a group (or family) set up on the periodic table? • Answer = up and down/vertically

9. Chapter 8 Review • What are synthetic elements? • Answer = Synthetic elements are created by scientists in a lab.

10. Chapter 8 Review • Where are the transition elements on the periodic table? • Answer = groups 3-12

11. Chapter 8 Review • Which element is NOT part of the iron triad? • A. Nickel • B. Copper • C. Cobalt • D. Iron • Answer = B, copper

12. Chapter 8 Review • Several groups contain only metals. Which group contains only nonmetals? • A. Group 1 • B. Group 12 • C. Group 2 • D. Group 18 • Answer = D, group 18

13. Chapter 8 Review • A brittle, non-conducting, solid might belong to which of the following groups? • A. alkali metals • B. alkaline earth metals • C. actinide series • D. oxygen group • Answer = D, oxygen group

14. Chapter 8 Review • Describe something that mercury is used for. • Answer = thermometers, barometers, and some dental materials

15. Chapter 8 Review • Using the following element key, what is the element symbol? • Answer = H Hydrogen 1 H 1.008

16. Chapter 8 Review • Using the following element key, what is the atomic mass? • Answer = 1.008 Hydrogen 1 H 1.008

17. Chapter 8 Review • Using the following element key, what is the atomic number (or number of protons)? • Answer = 1 Hydrogen 1 H 1.008

18. Chapter 8 Review • Using the following element key, what is the element name? • Answer = Hydrogen Hydrogen 1 H 1.008

19. Chapter 8 Review • What do the following shapes represent when they are used on the periodic table? • Answer = balloon:gas, cube:solid, water droplet: liquid, circle inside circle:synthetic

20. Chapter 8 Review • Which statement about the periodic table is TRUE? • A. Elements all occur naturally on Earth. • B. Elements occur in the order in which they were discovered. • C. Elements with similar properties occupy the same group. • D. Element are arranged in the order Mendeleev chose. • Answer = C, elements with similar properties occupy the same group.

21. Chapter 8 Review • Which of the following is NOT a property of metals? • A. Malleability • B. Luster • C. Ductility • D. Poor conductor of heat and electricity • Answer = D b/c Metals are actually good conductors of heat and electricity.

22. Chapter 8 Review • Which three elements make up the iron triad? • Answer = Iron, Cobalt and Nickel

23. Chapter 8 Review • To which category do the three elements of the iron triad belong? • A. Nonmetals • B. Transition elements • C. Noble gases • D. Representative elements • Answer = B, transition elements

24. Chapter 8 Review • How did Mendeleev arrange the first periodic table? • Answer = Mendeleev arranged the periodic table in order by atomic mass.

25. Chapter 8 Review • How did Moseley improve the arrangement of the periodic table? • Answer = Moseley re-arranged the periodic table by order of increasing atomic number.

26. Chapter 8 Review • Which of the following categories takes up the most space on the periodic table? • Metals, Nonmetals or Metalloids • Answer = Metals

27. Chapter 8 Review • When Mendeleev arranged his first periodic table by atomic mass, he noticed that elements with similar __________ fell into groups on the periodic table. • Answer = properties

28. Chapter 8 Review • Another word for atomic number is… • Answer = the number of protons

29. Chapter 8 Review • Elements in which group can be used as catalysts? • A. Carbon • B. Oxygen • C. Platinum • D. Boron • Answer = C, platinum

30. Chapter 8 Review • Group 1 on the periodic table can also be called what? • A. Halogens • B. Alkali Metals • C. Alkaline Earth Metals • D. Oxygen family • B, Alkali Metals

31. Chapter 8 Review • Group 2 on the periodic table can also be called what? • A. Halogens • B. Alkali Metals • C. Alkaline Earth Metals • D. Oxygen family • Answer = Alkaline Earth Metals

32. Chapter 8 Review • Which of the following statements about Iron is NOT correct? • A. Iron is found in the hemoglobin of red blood cells • B. Iron is a component of steel • C. Iron is a member of the iron triad • D. Iron is a metalloid • Answer = d, iron is a metal not a metalloid

33. Chapter 8 Review • Who created the first version of the periodic table – Moseley or Mendeleev? • Answer = Mendeleev

34. Chapter 8 Review • What is the name given to a row of elements in the periodic table whose densities and melting points change gradually and predictably? • Answer = a period

35. Chapter 8 Review • Who chooses the names of chemical elements? • Answer = the person that discovers the elements gets to choose the name.

36. Chapter 8 Review • Where are synthetic elements created? Why? • Answer = They are created in labs by scientists because they do not occur naturally.

37. Chapter 8 Review • What three elements make up the Iron triad? • Answer = Iron, Cobalt and Nickel

38. Chapter 8 Review • Why are the lanthanides and the actinides separated on the periodic table? • Answer = so that the table can fit easily on a page