1. Chapter 6 The Periodic Table and Periodic Law

2. Historical Timeline Development of the Periodic Table

3. Thursday and Friday

4. 6.1 Development of the Periodic Table Late 1790s Antoine Lavoisier compiled a list of all elements known at the time- 23 elements

5. 1800s- invention of electricity, development of spectrometer, and industrial revolution led to explosion in the number of known elements By 1870 there were 70 known elements

6. 1864 John Newlands created law of octaves, which means that properties repeat every 8 th element Law doesn’t work for all elements

7. 1869 Meyer and Mendeleev demonstrated a connection between atomic mass and elemental properties

8. 1869 Mendeleev organized 1 st periodic table by atomic mass and left blank spaces where undiscovered elements should go- not completely correct

9. 1913 Moseley arranged elements according to atomic number Periodic Law – the periodic repetition of chemical and physical properties of elements when they are arranged by increasing atomic number

10. The Modern Periodic Table Consists of boxes containing element name, symbol, atomic number, and atomic mass

11. Friday We will finish the historical timeline of the periodic table We will color the two main sections of the periodic table: Representative elements Transition elements We will color in the metals and the nonmetals and the metalloids

12. Representative Elements- main group of periodic table (1,2, and 13-18), s and p block; represent a wide range of chemical and physical properties Transition Elements- groups 3-12

14. Classifying the Elements Metals- elements that are generally shiny, solids at room temperature, good conductors of heat and electricity, malleable (able to be pounded into thin sheets), and ductile (drawn into wires)

15. Nonmetals- generally gases or brittle, dull-looking solids; poor conductors of electricity Metalloids- elements with physical and chemical properties of both metals and nonmetals

16. Monday We will make a foldable over the different types of groups in the periodic table

17. The Families of the modern Periodic Table

18. Alkali Metals- Group 1A (1) Alkaline Earth Metals- Group 2A (2) Both groups are chemically reactive

19. Transition Metals- Group B elements (d block) Inner Transition Metals- (f block)

20. Halogens- Group 7A (17); highly reactive Noble Gases- Group 8A (18); extremely unreactive

21. Classifying the Elements S-block elements –groups 1A and 2A –Holds a maximum of two electrons P-block elements group 3A through 8A, or 13-18 Holds a maximum of 6 electrons

22. d-block elements –contains transition metals –largest block –holds maximum of 10 electrons f-block elements –contains inner transition metals –lanthanide and actinide series – holds maximum of 14 electrons

23. Tuesday - Exploration Activity Lab over the periodic trends of the Periodic Table

24. Wednesday We will do trends on the periodic table Compare our notes to he lab from Tuesday

25. 6.3 Periodic Trends Atomic Radius generally increases from right to left and increases from top to bottom of the periodic table

26. Adaptive Curriculum Clip

28. Atomic Size

29. Ionic Radius- positive ions decrease from left to right until group 3A (13), then negative ions decrease until 8A (18); generally increases from top to bottom Ion- atom or bonded group of atoms that has a positive or negative charge

30. Cation –positively charged ion (lost electron) –Will decrease radius because of loss of outer energy level –Are in groups 1-13

31. Anions –negatively charged ion (gained electron) –will increase radius because protons “pulling in” are the same and with extra electrons they repel each other and spread out –groups 14-18

32. Atomic and Ionic radius follow the same trend!!

33. Ionization Energy energy required to remove an electron from a gaseous atom generally decreases from right to left and decreases from top to bottom

35. Electronegativity indicates the relative ability of its atoms to attract electrons in a chemical bond decreases from right to left and decreases from top to bottom

36. Follows the same trend as electronegativity!!

37. Thursday We will finish our lab We will finish our review and check it in class

38. Friday We will test on Friday