Flashcards in The Group 1 Elements Deck (9):
1
Explain why group 1 elements are stored under oil?
Because they react with air and react vigorously with water
2
Describe the reaction of lithium, sodium and potassium with water
- hydrogen is formed
- an alkali is formed which is the hydroxide of the metal
- the reactivity with water increases down group 1
- potassium gives a lilac flame
3
Recognise sodium, lithium and potassium as Group 1 elements
They can be recognised by the colours they produce in a flame test
4
Recall the flame test colours for lithium, sodium and potassium compounds
Lithium - red
Sodium - yellow
Potassium- lilac
5
Explain why group 1 elements have similar properties
Because when they reatc, an atom loses one electron to form a psotive ion with a stable electronic structure
6
Describe how to use a flame test to identify the presence of lithium, sodium and potassium compounds
- use of moistened flame test wire
- flame test wire dipped into solid sample
- flame test wire put into blue bunsen flame
- colours of the flames
7
Predict the physical properties of rubidium or caesium given information about the other group 1 elements
The reaction would be very fast, exothermic, violent snd caesium is even more reactive and will react violently with water
8
Explain why a process is oxidation from its ionic equation
Oxidation involves the loss of electrons from an atom
9