The Periodic Table
- Created by: Lewis 2001
- Created on: 12-10-16 20:11
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- The Periodic Table
- Group 1: The Alkali Metals
- Very Soft
- Low melting Points
- When water reacts with lithium, sodium and potassium, they react vigorously to form hydroxides.
- Elements become more reactive further down as the atomic number increases.
- The Transition Metals
- All metals have high melting points.
- Good conductors of heat and electricity.
- They are insoluble.
- They are malleable.
- Metals consist of a regular lattice structure which are held together with metallic bonds.
- Consists of positive ions and free electrons, this is because the bonds allow the outer electron to become de-localized.
- Group 7; The Halogens
- Very Reactive
- A more reactive halogen can push out less reactive one from its compounds.
- Halogens can react with hydrogen to form hydrogen hallides.
- The Halogens react with metals to from metal halides.
- More reactive halogens will displace less reactive ones.
- The halogens all have 7 electrons in their outer shells.
- Chlorine is a fairly reactive, poisonous, dense green gas.
- Bromine is a dense, poisonous, orange liquid.
- Iodine is a dark grey crystalline solid.
- Group 8; The Noble Gases
- They are all inert, colorless gases.
- Everyday Uses
- Argon is used to provide an inert atmosphere in filament lamps.
- Can also be used to protect metals that are being welded, the inert atmosphere stops the hot metals reacting with oxygen.
- Helium is used in airships and party balloons.
- Argon is used to provide an inert atmosphere in filament lamps.
- The boiling points and densities of the noble gases increase as you move down the group.
- Group 1: The Alkali Metals
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