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The Periodic Table
Things to remember:
· Rows are called periods.
­ The elements are arranged with increasing
atomic number.
­ The period number is the same as the number
of electron shells
­ Properties change as you go along periods.…read more

Slide 3

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The Periodic Table
· Columns are called groups.
­ Elements in groups have similar properties to
each other, as they have the same number of
electrons in their outer shell.
­ Group 0 elements have 0 electrons in their
outer shells.
­ Properties change slowly as you go down
groups.…read more

Slide 4

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The Periodic Table
Metals and non metals
are opposite sides of the
periodic table:
Metals are on the left,
non metals are on the
right.…read more

Slide 5

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Atoms
·The nucleus is the middle
of the atom, comprised of
protons and neutrons.
·The nucleus is surrounded
by electrons, in shells.
·The nucleus is very small
compared to the overall size
of the atom.…read more

Slide 6

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Atoms
Relative mass Relative charge
Proton 1 +1
Neutron 1 0
Electron 1/2000 -1
·Atoms of a certain element all have the same number of protons, and this is
specific to that element.
·Atoms have the same number of protons and electrons.…read more

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