Other slides in this set

Slide 2

Preview of page 2

Here's a taster:

Overview of the periodic table
The periodic table has eight main groups. For example, group 1
contains very reactive metals such as sodium - Na - while group 7
contains very reactive non-metals such as chlorine - Cl.
Note that you will never find a compound in the periodic table,
because these consist of two or more different elements joined
together by chemical bonds.
The modern periodic table is a chart containing the elements
arranged in order of increasing atomic number. A vertical column,
called a group, contains elements with similar properties. A
horizontal row is called a period. The atomic number of the
elements in a period increases from left to right along the row.…read more

Slide 3

Preview of page 3

Here's a taster:

Groups in the periodic table
· The alkali metals, halogens and noble gases are three
important groups in the periodic table.
· The alkali metals are soft, reactive metals. They react
vigorously with water and become more reactive as you go
down the group.
· The halogens are reactive non-metals. They become darker as
you go down the group. Their reactivity decreases as you go
down the group and their boiling points increase. A more
reactive halogen will displace a less reactive halogen from
solutions of its salts.
· The noble gases are unreactive non-metals, which exist as
single atoms.…read more

Slide 4

Preview of page 4

Here's a taster:

Groups in the periodic table diagram…read more

Slide 5

Preview of page 5

Here's a taster:

The alkali metals - overview
The elements in group 1 are
called the alkali metals. They
belong to the left-hand column
in the periodic table. They are
very reactive and must be
stored in oil to avoid contact
with air or water.…read more

Slide 6

Preview of page 6

Here's a taster:

Common properties of alkali metals:
The alkali metals have the following properties
in common:
· they have low melting and boiling points compared to most
other metals
· they are very soft and can be cut easily with a knife
· they have low densities (lithium, sodium and potassium will
float on water)
· they react quickly with water, producing hydroxides and
hydrogen gas
· their hydroxides and oxides dissolve in water to form alkaline
solutions…read more

Slide 7

Preview of page 7
Preview of page 7

Slide 8

Preview of page 8
Preview of page 8

Slide 9

Preview of page 9
Preview of page 9

Slide 10

Preview of page 10
Preview of page 10


No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all resources »