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WorksheetsMetals and non metals
Total questions: 10
Worksheet time: 6mins
Potassium + Oxygen gives
2K2O
2CaO
2mgO
2N2O
MgO +H2O =
MgOH
Mg2O
Mg(OH)2
Mg(O)2
Which one of the following gas burns with the "pop" sound?
Oxygen
Hydrogen
Chlorine
Hydrogen Sulphide
Which one of the following metal reacts vigorously with oxygen and water?
Sodium
Potassium
Calcium
Magnesium
When MgO is dissolved in water, Mg(OH)2 is obtained. The solution thus obtained is _______________ in nature.
Amphoteric
Alkaline
Neutral
Acidic
When magnesium reacts with water and oxygen, what can we observe?
Coated with black layer
Does not burn
Burns with a yellow flame
Burns with a brilliant white flame.
Amphoteric oxides react with both acids and alkali to form salt and water.Pick the amphoteric oxide
Aluminium oxide
calcium oxide
zinc oxide
Both aluminium and zinc oxide
Choose the one that is a chemical property
Magnetism
Size
Color
Reactivity with water
The reaction between calcium and oxygen forms:
calcium oxate.
calcium oxide.
calcium oxygen.
calcium carbonate.
