1. CHEMISTRY OF THE PERIODIC TABLE www.sciencetutors.zoomshare.com A group is a vertical column. Going from top to the bottom. Group 1 Li 3 Na 11 k 19 Rb 37 Cs 55 Fr 87

2. What is the Periodic Table ? The periodic table is a tabular arrangement of all known chemical elements according to atomic number as based on the periodic law. Periodic table obviously is a classification system of elements arranged according to their atomic number. www.sciencetutors.zoomshare.com CHEMISTRY OF THE PERIODIC TABLE

3. THE PERIODIC TABLE www.sciencetutors.zoomshare.com CHEMISTRY OF THE PERIODIC TABLE

4. The PERIODIC TABLE summarizes the elements by arranging them in the order of their atomic number in such a way that significant chemical and physical similarities and trends can be appreciated. www.sciencetutors.zoomshare.com CHEMISTRY OF THE PERIODIC TABLE There are 8 groups in the Periodic Table. A group is a vertical column. Going from top to the bottom. Group 1 Li 3 Na 11 k 19 Rb 37 Cs 55 Fr 87

6. THE PERIODIC TABLE www.sciencetutors.zoomshare.com CHEMISTRY OF THE PERIODIC TABLE Sodium has need to lose 1 electron in order to achieve a full outer shell of electrons {Na 2, 8, 1} to become Chemically stable. Chlorine has a need to gain 1 electron from Sodium in order to achieve a full outer shell of electrons { Cl 2, 8, 8} to become chemically stable Elements with the highest reactivity (e.g. Na, K, Rb, Cs, Fr in Group 1 or Mg, Ca, Sr, Ba, Ra in Group 2 and Group 7 elements ) are those with the greatest need to gain or lose electrons in order to achieve a full outer shell of electrons. Na (Sodium atomic No. 11) electron configuration = 2, 8, 1 Cl (Chlorine atomic No. 17) electron configuration = 2, 8, 7

9. Periods in the Periodic Table? www.sciencetutors.zoomshare.com CHEMISTRY OF THE PERIODIC TABLE Across the periodic table of chemical elements, are periods which are the horizontal rows of the table or rows across the table. Group 1 Li 3 Na 11 k 19 Rb 37 Cs 55 Fr 87

10. Periods in the Periodic Table? www.sciencetutors.zoomshare.com CHEMISTRY OF THE PERIODIC TABLE Across the periodic table of chemical elements, are periods which are the horizontal rows of the table or rows across the table. Match the coloured arrows with the following periods: 2 3 4 5 6 1 7 Group 1 Li 3 Na 11 k 19 Rb 37 Cs 55 Fr 87

11. Periods in the Periodic Table? www.sciencetutors.zoomshare.com CHEMISTRY OF THE PERIODIC TABLE Across the periodic table of chemical elements, are periods which are the horizontal rows of the table or rows across the table. Period 2 Period 3 Period 4 Period 5 Period 6 Period 7 Copyright2010 Sciencetutors www.sciencetutors.zoomshare.com Group 1 Li 3 Na 11 k 19 Rb 37 Cs 55 Fr 87

12. Task 1.How many element are in the 7 th period or row of the periodic table? 2. Which are the first and the last elements in period 3? 3. What are group (chemical family) names of elements in question 2 above? www.sciencetutors.zoomshare.com CHEMISTRY OF THE PERIODIC TABLE A period 7 element is one of the chemical elements in the seventh row (or period ) of the periodic table of chemical elements.

13. Understanding Groups And Periods www.sciencetutors.zoomshare.com CHEMISTRY OF THE PERIODIC TABLE Across the table READING from LEFT to RIGHT are PERIODS Walking your way down from the top are the GROUPS

18. How many times heavier than hydrogen atom are the atoms of: 1. Sodium 2. Magnesium 3. Carbon 4. Chlorine 5. Iodine www.sciencetutors.zoomshare.com CHEMISTRY OF THE PERIODIC TABLE QUICK QUIZ 10 MINUTES

19. What is the Periodic Table all about? www.sciencetutors.zoomshare.com CHEMISTRY OF THE PERIODIC TABLE

20. What is the Periodic Table all about? www.sciencetutors.zoomshare.com CHEMISTRY OF THE PERIODIC TABLE

21. What is the Periodic Table all about? www.sciencetutors.zoomshare.com CHEMISTRY OF THE PERIODIC TABLE

22. What is the Periodic Table all about? www.sciencetutors.zoomshare.com CHEMISTRY OF THE PERIODIC TABLE

23. What is the Periodic Table all about? www.sciencetutors.zoomshare.com CHEMISTRY OF THE PERIODIC TABLE

24. What is the Periodic Table all about? www.sciencetutors.zoomshare.com CHEMISTRY OF THE PERIODIC TABLE

25. What is the Periodic Table all about? www.sciencetutors.zoomshare.com CHEMISTRY OF THE PERIODIC TABLE

26. CHEMISTRY OF THE PERIODIC TABLE www.sciencetutors.zoomshare.com