Alkali metals
- Created by: Juliet06
- Created on: 01-03-16 13:31
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- Group 1- Alkali Metals
- Sodium
- Reacts with water to form sodium hydroxide
- If reacted with oxygen a yellow flame is produced
- Soluble in water
- Found in salt (usually chloride)
- When reacted with water it curls up into a ball and floats on the water
- Lithium
- Appears shiny but oxidises quickly
- When reacted with water it fizzes and the reaction produces hydrogen
- Reacts with water to form lithium hydroxide
- Potassium
- Softer and more shiny than lithium and sodium
- Rarer and more expensive than lithium and sodium
- Most reactive out of the three metals
- When reacted with water where is a lilac flame and an explosive reaction
- Reacts with water to form potassium hydroxide
- How are group 1 metals different to typical metals?
- Have a lower melting point
- More reactive so have to be stored in oil
- Tarnish (oxidise) quicker in air
- Predict the reactivity of Rubidium, Caesium and Francium
- They will be highly reactive because as you go down the periods of group 1 the metals get progressively more reactive. Francium would be the most reactive out of these metals.
- Sodium
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