CHEMISTRYNAME ______

LAB - ELEMENTS DEMONSTRATION

LAB 23

The answers to the questions below are covered in the presentation on the elements. If you missed some of the answers then you can check the book.

1What are the three most abundant elements in the earth’s crust in order ?

2What metal is often used in roofing ?

3What metal is often put in glass or tile to make it blue ?

4Household Hydrogen Peroxide is what % active ingredients ?

5Is Tin foil as thin as Gold foil ?

6Is Mercury heavier than Iron ?

7Graphite is which element ?

8Which element did the Romans use for water transport; it is a suspect contributing cause for the fall of the Empire ?

9Galvanized means coated with which element ?

10A mixture of 2 or more metals is called an ___ .

11What is the name for Aluminum ore ?

12Who found a cheap way to isolate Aluminum from ore ?

13The atmosphere is what % Nitrogen ?

14What is the formula for table salt ?

15Pressure is important when talking about materials that are in the ___ phase.

1 ______2 ______3 ______

4 ______5 ______6 ______

7 ______8 ______9 ______

10 ______11 ______12 ______

13 ______14 ______15______

16Name a metal used in magnets ?

17Which gas is heavier: Argon, Helium, or Hydrogen ?

18Name the most common Silicon compound ?

19Which metal is softer, Lead or Iron ?

20Is Mercury harmful to humans ?

21A rock that contains a metal to be mined is called an ___ .

22Which metal is alloyed the most ?

23Which metal is used in golf clubs due to its high strength and low density ?

24Which solid non-metal element sublimes around room temperature ?

25What phase is Argon ?

26Which yellow solid element smells really bad when burned ?

27Which group of metals are known for making very colorful compounds ?

28Much of the white paint that is used has this metal in it to make it white ?

29Organic chemistry is often called the chemistry of which element ?

30Is Magnesium flammable ?

16 ______17 ______18 ______

19 ______20 ______21 ______

22 ______23 ______24 ______

25 ______26 ______27 ______

28 ______29 ______30 ______

31List the following precious metals in order from least expensive to most expensive:

SilverCopperTinPlatinumIronGold

32Why are things galvanized ?

33Name 5 Organic compounds.

34List 5 Uses for Copper.

35List 10 things around the house that are made of metal. You can’t repeat metals.

31______

32______

33______

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34______

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35objectmetal

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36What gases did you observe in the discharge tube and what color were they ?

37What is the shape of a salt crystal ?

38Why does the strip of Mg burn better than the chunk of Mg ?

39What is powdered Aluminum used for ?

40Is copper an easy metal to mold and work with ?

41The thickness of a wire is measured by a measurement called _____ .

42Enzymes are important to our health. They contain what metal ion ?

43Blood cells have what metal ion in it ?

44Lead ore is called ___ .

45Aluminum foil used to be called ___ foil.

46Pencil lead is really what element.

47Different forms of the same element in the same phase.

48Hat makers used to go insane due to working with which element.

49Which element is denser Pb or Al ?

50What element is best at forming long chains of molecules like what is found in plastics or other synthetic materials ?

36 ______37 ______38 ______

39 ______40 ______41 ______

42 ______43 ______44 ______

45 ______46 ______47 ______

48 ______49 ______50 ______

51What was the first organic compound synthesized from inorganic compounds ?

52Quicksilver is called which element ?

53Volcanoes often release which element as part of an eruption.

54Nickel solutions are usually this color.

55Battery acid is mostly ____ acid.

56What is the acid that is found in many cola drinks ?

57What is a relatively new application for some rare earth elements ?

58Which compound is often used to describe how industrialized a country is ?

59Damascus steel is steel that is strengthened by the addition of this element.

60The dark thick liquid material that comes out of the ground that is later made into]gasoline and fuel oil is called _____ .

61The two elements that are needed for strong bones are ___ ?

62What are the two elements that are used to make matches work ? (Not oxygen)

63When a metal can be pounded into thin sheets it is said to be ___ .

64When a metal can be drawn into thin wires it is said to be ___ .

65Which element ignites in air ?

51 ______52 ______53 ______

54 ______55 ______56 ______

57 ______58 ______59 ______

60 ______61 ______62 ______

63 ______64 ______65 ______

Elements to have out to display

METALS

1Copper (sheet2Nickel3Zinc Sheet + galv. nails

4Metal samples in bin ( Ti, Be, Cr, Pb, Iron, B, Si, Bi, Mn, Hg, Mg, Al Sn )

5Carbon / Graphite6Rare Earth magnet and regular magnet

7Tin Foil8Cobalt Glass9Bronzed baby shoes

10Steel11Different ores (Al, Fe, Pb )

12Different forms of metal (wire, shot, powder, sheet, mossy, etc.)

NON-METALS

1Hydrogen Peroxide2Sodium Chloride3 Transition Salts

4Variety of Organic Compounds 5Spectral tube of Hydrogen

Elements to demonstrate

METALS

1Lithium, Sodium, Potassium in water

2Burn Magnesium3 Melt Lead

4Melt Gallium5 Burn Al powder

NON – METALS

1Melt Sulfur and put in water2Sublime Iodine

Do together in the same hood to save time – While Iodine is heating do the Sulfur.

3Burn Hydrogen4Try to burn Nitrogen or Ne

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