Chemistry C3.1
- Created by: Will Pound
- Created on: 06-03-14 18:08
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- Chemistry C3.1
- Group 1 - Alkali metals
- The elements in group 1 are called Alkali metals
- These metals all react with water to produce hydrogen & an alkaline solution containing the metal hydroxide
- They form positive ions with a charge of 1+ in reactions to make ionic compounds
- Their compounds are usually white or colourless crystals that dissolve in water producing colourless solutions
- The reactivity of the alkali metals increases going down the group
- Transition elements
- Much higher melting points and densities than alkali metals
- Harder & stronger than alkali metals but are much less reactive
- Do not react vigorously with oxygen or water
- Can form ions with different charges, in compounds that are often coloured
- Important industrial catalysts
- Group 7 Halogens
- They all form ions with a single negative charge in their ionic compounds with metals
- Form covalent compounds by sharing electrons with other non-metals
- A more reactive halogen can displace a less reactive halogen from a solution of one of its salts
- The reactivity of the halogens decreases going down the group
- Group 1 - Alkali metals
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