Group 1: The Alkali Metals (AQA GCSE Chemistry Combined Science): Flashcards
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Why do Group 1 metals look dull?
Why do Group 1 metals look dull?
Oxide layer forms on surface
How are alkali metals stored?
How are alkali metals stored?
In oil (to prevent reaction with O₂ and moisture)
Density of alkali metals
Density of alkali metals
Low density - most float
Melting/boiling points of Group 1
Melting/boiling points of Group 1
Lower than many other metals
Outer shell electrons in Group 1
Outer shell electrons in Group 1
1 electron
Why are Group 1 metals very reactive?
Why are Group 1 metals very reactive?
Easily lose 1 outer electron
Reactivity trend down Group 1
Reactivity trend down Group 1
Increases
Why reactivity increases down Group 1
Why reactivity increases down Group 1
Outer electron further from nucleus (easier to lose)
Density trend down Group 1
Density trend down Group 1
Increases
Melting point trend down Group 1
Melting point trend down Group 1
Decreases
Product of Group 1 metal + oxygen
Product of Group 1 metal + oxygen
Metal oxide
Products of Group 1 metal + water
Products of Group 1 metal + water
Metal hydroxide + hydrogen
Universal indicator colour with Group 1 hydroxides
Universal indicator colour with Group 1 hydroxides
Purple (alkaline solution)
What happens when Group 1 metals react with water?
What happens when Group 1 metals react with water?
Float, move, and fizz
Flame colour when potassium reacts
Flame colour when potassium reacts
Lilac