Notifications
Clear all
Materials: Metals and Non-Metals
1
Posts
2
Users
0
Likes
370
Views
0
14/04/2021 2:20 pm
Topic starter
Taking examples of magnesium and sulphur explain how metals and non-metals produce oxides with different characteristics.
1 Answer
0
14/04/2021 2:22 pm
Magnesium bums in oxygen to form magnesium oxide, which dissolves in water to form magnesium hydroxide – an alkali.
2Mg + O2 → 2MgO
MgO + H2O → Mg(OH)2
Magnesium hydroxide changes red litmus into blue.
Sulphur bums in air to form sulphur dioxide, which dissolves in water to form sulphurous acid – an acid which turns blue litmus into red.
S + O2 → SO2
SO2 + H2O → H2SO3