Atoms and elements form the building blocks of matter. Learning about them helps us understand everything around us, from simple materials to the most complex substances.
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You can find more about this topic by visiting BBC Bitesize - Atoms, elements and compounds
An element was defined by the famous scientist Robert Boyle in 1661. The ancient Greeks thought there were four elements - fire, earth, air and water. Nowadays, we know that not a single one of those is actually an element. Fire is something burning, earth and air are mixtures and water is a compound. Believe it or not, there are still some people who believe in the ancient Greek ideas of the elements!
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A group is a vertical column of elements
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They are soft metals that react rapidly with water
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These are harder than the Group 1 metals next to them
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They are poisonous, coloured elements
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About the only thing that they will react with is the element fluorine
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The others are non metals
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The other three are all noble gases, hydrogen is a very odd element that doesn't really fit properly into any group of the periodic table
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The latin name for copper is cuprum
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The latin name for sodium is natrium
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