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WorksheetsGraduation of elements on the periodic table
Total questions: 10
Worksheet time: 4mins
Name
Class
Date
1.
Correct the equation:
MgO + H2O -----------> ...........................
a)
Mg(OH)
b)
Mg2 +(OH)2
c)
Mg(OH)2
d)
2Mg(OH)
2.
Picometer = ..........
a)
1 × 10 -2
b)
1 × 10 2
c)
1 × 52
d)
2 × 9²
3.
Element ............ reacts instantly with water
a)
Calcium
b)
Magnesium
c)
Sodium
d)
Copper
4.
CO2 + H2O --------------> .......................
a)
HCO
b)
H 2 CO 3
c)
H 2 Co 3
d)
HCO2
5.
Atomic radius (a) in the group
6.
Electronegativity ............... in the period
a)
Increases
b)
Decreases
7.
............. are metal oxides
a)
Basic oxides
b)
Acidic oxides
c)
alkaline oxides
8.
Cross the odd one out:
a)
Zinc
b)
Potassium
c)
Magnesium
d)
Copper
9.
.............. oxide turns litmus solution into red
a)
CO 2
b)
Na 2 O
c)
MgO
d)
SO 2
10.
........... is an ion of nonmetallic element
a)
Negative ion
b)
Positive ion
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