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The Periodic Table www.privatehand.com/flash/elements .html

The Periodic Table

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Page 1: The Periodic Table

The Periodic Table

www.privatehand.com/flash/elements.html

Page 2: The Periodic Table

Horizontal rows are called periods There are 7 periods

Page 3: The Periodic Table

Vertical columns are called groups or families.

Elements are placed in columns by similar properties.

Page 4: The Periodic Table

1 2

13 14 15 16 17

18

3 4 5 6 7 8 9 10 11 12

The Different Groups of Elements

Page 5: The Periodic Table

Metals

Page 6: The Periodic Table

Metals Luster – shiny. Ductile – drawn into wires. Malleable – hammered into sheets. Conductors of heat and electricity.

Page 7: The Periodic Table

Transition metals

Page 8: The Periodic Table

These are called the inner transition elements and they belong here

Page 9: The Periodic Table
Page 10: The Periodic Table

Non-metals Dull Brittle Nonconductors

- insulators

Page 11: The Periodic Table

Metalloids or Semimetals

Properties of both Semiconductors B

Si

Ge As

Sb Te

Po At

Page 12: The Periodic Table

Group 1 are the alkali metals Group 2 are the alkaline earth metals

Page 13: The Periodic Table

Group 17 is called the halogens Group 18 are the noble gases

Page 14: The Periodic Table

Why do we have a periodic table? Organizes the properties of atoms

Tells us information about elements that make up compounds

Page 15: The Periodic Table

Answer the Following: Write down the element symbols on

the index card and indicate whether they are metals (M), nonmetals (NM) or metalloids (ME).

1. H

2. Se

3. Zn

4. Si

5. Al

1. NM

2. NM

3. M

4. ME

5. M

Page 16: The Periodic Table

Numbers of electrons Atoms of different elements have different

numbers of electrons but they may have the same number of electrons in the outer most energy level

The outer most electrons help determine the chemical properties of elements

So how does the periodic table help us figure out the number of outer electrons?

Page 17: The Periodic Table

We use the group number to determine the number of electrons in the outermost energy level of an atom.