Mendeleev, made a major breakthrough when it came to discovering a sensible order for the elements. He arranged them in a table according to their mass.
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What are alkali metals?
Alkali metals are reactive, soft metals with low densities
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What are transition metals?
Transition metals are unreactive and many have everyday uses.
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What are halogens?
Halogens are reactive non-metals that form coloured vapours
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What are noble gases?
Noble gases are unreactive non-metals. All gases fall in to this category.
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What is the structure of a metal?
The particles in a metal are held together by strong metallic bonds. It takes a lot of energy to separate the particles. That is why they have high melting points and boiling points.
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Card 2
Front
What did mendeleeve do?
Back
Mendeleev, made a major breakthrough when it came to discovering a sensible order for the elements. He arranged them in a table according to their mass.
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