WorksheetsPeriodicity chemical properties
Total questions: 10
Worksheet time: 6mins
Which of the following Period 3 element forms an oxide with the highest oxidation number?
Silicon
Phosphorus
Sulphur
Chlorine
A compound X with a high melting point dissolves in water and conduct electricity in molten state. Compound X most probably is
K2CO3
MgO
AlCl3
SrSO4
An oxide G has a boiling point 22300C. It dissolves in aqueous sodium hydroxide solution but not in water and acid. Oxide G is
PbO2
P2O5
SiO2
Al2O3
Which oxide of an element dissolves in water to form an acidic solution?
Na
Mg
Si
P
State acid-base property for MgO and SiO2.
(a)
Which element has an oxide which dissolves in water to form an acidic solution?
Al
Na
P
Si
Which oxide will produce 1.0 mol dm-3 aqueous solution with the lowest pH value?
Na2O
MgO
P2O5
SO3
Choose the correct statements.
SiO2 and P4O10 are covalent oxides.
SiO2 is neutral and insoluble in water.
Al2O3 dissolves in water; aqueous acid; alkali.
P4O10 is hydrolysed in water to form H3PO4.
What can be deduced based on the reaction scheme above?
W is a reducing agent
W conducts electricity
W has a giant structure
An oxide of Period 3 of the Periodic Table element reacts with water to form a strong acid. The oxide is
Polar
An oxidising agent
dichlorine heptoxide, Cl2O7
from Group 15 element
