2.2 The Periodic table and Chemical Properties

1. 2.2 The Periodic table and Chemical Properties

2. Arrange the following shapes into a pattern of rows and columnsthat is logical.

3. Dmitri Mendeleev + VIDEO • Just like you, he searched for patterns among elements • He wrote important properties of each known element on a card and he tried to sort them out... many, many, many times And just like you, he tried to arranged them based on their properties into rows and columns

4. Dmitri Mendeleev According to which properties do you think he tried to arrange the elements?

5. Dmitri Mendeleev • Firstly, based on atomic mass (in rows) • Then he started another row when an element with similar properties was found

6. 1. Arrange them first based on ATOMIC MASS into a long row 2. Then find an element that has very similar properties as the very first element (terryfoxium) 3. Put that elementbelowterryfoxium, and repeat the step 2 for the element next to terryfoxium CompleteThink About It 2-2A Periodic Puzzle

7. CompleteThink About It 2-2A Periodic Puzzle HINTS: • There will be more than 3 but less than 7 columns • Some elements might be missing • atomic mass DOES NOT have to increase from left to right (1 case)

9. All form compounds with R with 1:1 ratio • All are conductors • B.Ps range around 1000˚C and decreasing going down the group

10. All form compounds with R with 1:2 ratio • All are conductors • B.Ps range around 300 - 400˚C and decreasing going down the group • All form compounds with R with 1:1 ratio • All are conductors • B.Ps range around 1000˚C and decreasing going down the group

11. All form compounds with R with 1:2 ratio • All are conductors • B.Ps range around 300 - 400˚C and decreasing going down the group • All form compounds with L with 1:2 ratio • Each element can forms a compound with itself • B.Ps are increasing going down the group • All form compounds with R with 1:1 ratio • All are conductors • B.Ps range around 1000˚C and decreasing going down the group

12. All form compounds with R with 1:2 ratio • All are conductors • B.Ps range around 300 - 400˚C and decreasing going down the group • All form compounds with L with 1:2 ratio • Each element can forms a compound with itself • B.Ps are increasing going down the group • Element missing • All form compounds with T with 1:1 ratio • Mostly non-conductors • B.Ps are increasing going down the group • All form compounds with R with 1:1 ratio • All are conductors • B.Ps range around 1000˚C and decreasing going down the group

13. All form compounds with R with 1:2 ratio • All are conductors • B.Ps range around 300 - 400˚C and decreasing going down the group • All form compounds with L with 1:2 ratio • Each element can forms a compound with itself • B.Ps are increasing going down the group • Element missing • All form compounds with T with 1:1 ratio • Mostly non-conductors • B.Ps are increasing going down the group • All DO NOT form compounds • ALL are non-conductors • B.Ps are ALL negative increasing going down the group • All form compounds with R with 1:1 ratio • All are conductors • B.Ps range around 1000˚C and decreasing going down the group

14. Dmitri Mendeleev He found out (just like you) that there is a horizontal and a verticalpattern in arranging the elements based on their properties

15. Dmitri Mendeleev He also predicted (just like you) the properties and the placement of the elements STILLYET TO BE DISCOVERED!

16. The Periodic Table • a chart that organizes the elements according to their physical and chemical properties. • gives each element’s name, symbol, atomic number, atomic mass, and ion charge(s)

17. Atomic Number the number of protons in the nucleus or the number of electrons (in a neutral atom)of each atom of an element What is the ATOMIC NUMBER of potassium?

18. INCREASING What is the pattern of ATOMIC NUMBERS in the Periodic Table?

19. Atomic Mass • the average mass of an atom of an element • Atomic mass ≈# of protons + # of neutrons • Always written as a decimal number and measured in amu (atomic mass units) What is the ATOMIC MASS of potassium?

20. INCREASING What is the pattern of ATOMIC MASSES in the Periodic Table?

21. Ion Charge • an electric charge that forms on an atom when it gains or loseselectrons What is the ION CHARGE of potassium?

22. Ion Charge • an electric charge that forms on an atom when it gains or loseselectrons Potassium NEUTRAL ATOM K K+ Potassium ION

23. Ion Charge • Did potassium lose or gainelectron(s)? • How many electron(s)? Potassium ATOM K K+ Potassium ION

24. Ion Charge • Some elements have a multiple ion charge. • These elements can form ions in more than one way.

25. QUICK CHECK • What is the atomic mass of this atom? • What is the atomic number of this atom? • What is (are) the possible ion charge(s) on this atom? • Did it gain or lose electrons? How many?

26. Workbook – page 28

27. The Periodic Table

28. The Chemical Elements

30. Make a table similar to this

31. Metals

32. Metals State at Room Temperature All solid except…

33. Metals State at Room Temperature Hg is liquid at RT

34. Metals State at Room Temperature Shiny Lustre Lustre = soft glow Appearance

35. Metals State at Room Temperature Good conductors of heat and electricity Appearance Conductivity

36. Metals State at Room Temperature Both Appearance Conductivity Malleability andDuctility

37. Non - Metals

38. Non - Metals State at Room Temperature Gases Liquids (only Br) Solids

39. Non - Metals State at Room Temperature Not very shiny Appearance

40. Non - Metals State at Room Temperature Poor conductors of heat and electricity Appearance Conductivity

41. Non - Metals State at Room Temperature Brittle, not ductile Appearance Conductivity Malleability andDuctility

42. Metalloids State at Room Temperature Solids

43. Metalloids State at Room Temperature Can be shiny or dull Appearance

44. Metalloids State at Room Temperature No conduction of heat but may conduct electricity Appearance Conductivity

45. Metalloids State at Room Temperature Brittle, not ductile Appearance Conductivity Malleability andDuctility

46. GROUPS or FAMILIES 1 – 18

47. PERIODS or ROWS (1 – 7)

48. SOME GROUPS OF THE PERIODIC TABLE

49. THE ACTUAL THE PERIODIC TABLE

50. INCREASING REACTIVITY The Periodic Table • Where are the following? • Atomic number • Period • Group/Family • Metals • Non-metals • Transition metals • Metalloids • Alkali metals • Alkaline earth metals • Halogens • Noble gases