1. Organization of the Periodic Table

2. For your chemistry unit assessment, you’ll need to memorize and sing this to the class.

4. Singalong time... “The Elements”

5. Dmitri Mendeleev
00:00-05:15

6. Dmitri Mendeleev
Published the first periodic table in 1869.

7. Dmitri Mendeleev
He recognized that some elements have similar chemical and physical properties.
Fluorine and chlorine are both gases that burn your lungs.
Silver and copper are both shiny metals that tarnish when exposed to air.

8. Periodic Table
The periodic table contains information about the structures and characteristics of the elements.

9. Periodic Table
Elements are arranged in the periodic table in order of their atomic number.

10. Periodic Table
“Periodic” means regular, repeating pattern, and properties of elements repeat in each period (row).

11. Periodic Table

12. Periods A horizontal row of elements is called a period.
The atomic numbers increase from left to right in a period.

13. Groups
A vertical column of elements in the periodic table is called a group.

14. Groups Groups are numbered 1–18 across the top of the periodic table.
Elements in the same group have similar properties (characteristics).

15. The Lanthanide and Actinide Series
The two rows of elements at the bottom of the table are the Lanthanide Series and the Actinide Series (also called “rare earth metals”).

17. Metals
Elements that are on the left and in the middle of the periodic table are metals.

18. Metals
Metallic refers to the properties common to metals.

19. Metals
Luster (shine) is one property of metals.

20. Metals Metals are also ductile and malleable.
Malleable-able to be bent out of shape without breaking
Ductile-able to be drawn out/formed into a wire

21. Metals Metals are good conductors.
Conductivity is the ability of a material to transfer electricity or heat

22. Metals
Most metals are solids at room temperature because of their high melting point (except Mercury-Hg)

23. Crash Course
5:10-6:20

24. Nonmetals
Elements on the right side of the periodic table are nonmetals.

25. Nonmetals
Nonmetals have properties that are the opposite of metals.

26. Nonmetals
Poor conductors of heat and electricity
Brittle
No luster.

27. Nonmetals
Nonmetals make up most of the matter in living things

28. Nonmetals Most are gases at room temperature. iodine carbon bromine
There are 5 which are solids: carbon (C), phosphorus (P), sulfur (S), selenium (Se) and iodine (I) and they are dull and brittle.
Bromine (Br) is the only nonmetal that is liquid at room temperature.
iodine
carbon
bromine

29. Nonmetals
Group 17 elements are the halogens, which are the most reactive nonmetals, and most of them are dangerous to humans. F

30. Nonmetals
Group 18 elements are the noble gases, which are extremely stable by themselves and occur in nature as single atoms, NOT compounds.

31. Metalloids
8-10 elements (depending who you ask!) are metalloids (also called semimetals)

32. Metalloids
Metalloids have the properties of both metals and nonmetals.
Conduct electricity, but not as well as metals, so they are called semiconductors.

33. Other Periodic Tables
A variety of periodic tables are designed to provide the information needed by different groups of people.

34. Other Periodic Tables
Other versions of the periodic table have been published over the years, but almost all scientists use Mendeleev’s version.

35. Crash Course
06:20-End

36. If a substance transfers electricity easily, it is said to be ____.
7.1 Organization of the Periodic Table
If a substance transfers electricity easily, it is said to be ____.
A malleable
B conductive
C metalloid
D ductile

37. The most reactive nonmetals are the ____ in Group 17.
A noble gases
B halogens
C semimetals
D Actinide series

38. Fluorine has properties most similar to ____. A oxygen B neon
7.1 Organization of the Periodic Table
Fluorine has properties most similar to ____.
A oxygen
B neon
C lithium
D chlorine

39. Which is a property of metals?
A poor conductors
B brittle
C low melting point
D luster

40. Which of the following is a noble gas?
A nitrogen
B oxygen
C argon
D bromine

41. Elements in a period are arranged ____.
A by increasing atomic number right to left
B by increasing atomic number left to right
C by increasing valence electrons right to left
D by increasing electric charge right to left

42. Which element is a gas at room temperature?
A neon
B bromine
C magnesium
D uranium

43. Nonmetals are located where on the periodic table?
A top
B bottom
C right side
D left side