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C1-1.5
- C1.1 Atoms And Elements
- Periodic Table
- An atom is the
smallest part of an
element.
- There are about 100
elements. Each one has its
own symbols
- All the elements are listed into groups in
the periodic table. These are the vertical
columns. The elements in a group have
similar properties.
- An atom is the
smallest part of an
element.
- Periodic Table
- C1.2
- At the centre of an atom is a necleus which is
made up of protons and neutrons. Outside the
necleus are even smaller particles called
electrons.
- Overall a atom has no electrical charge because it has an equal number of
positive protons and negative electrons.
- At the centre of an atom is a necleus which is
made up of protons and neutrons. Outside the
necleus are even smaller particles called
electrons.
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