Unit Periodic Table and Metals: (incomplete)

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All

the different elements are

arranged in a chart called the periodic table.

Here

are the main features of the table:

the horizontal rows are

called periods

the vertical columns are

called groups

elements in the same group are

similar to each other

the metals are on

the left and the non-metals are on the right (hydrogen is

a non-metal but is often put in the middle)

the main groups are numbered from

1 to 7 going from left to right, and the last group on the right is Group

0

the block in between Group 2 and

Group 3 is where the transition metals are placed

there are only two elements in

Period 1 (hydrogen and helium)

The

zig-zag line in this diagram separates the metals, on the left,

from the non-metals, on the right. Hydrogen is a non-metal but it

is often put in the middle.

Most

elements are metals, rather than non-metals.

Each

element has its own chemical symbol, made from letters. Only elements are found

in the periodic table, never compounds.

For example, substances like water and copper sulfate are not in the periodic

table because they are compounds.