WorksheetsFirst Day (1)
Total questions: 12
Worksheet time: 19mins
Name
Class
Date
1.
Which ion has the same electronic configuration as Cl-?
a)
F-
b)
P+
c)
Sc3+
d)
Si4+
2.
Why does barium react more rapidly with cold water than magnesium does?
a)
Barium atoms are larger and form ions more easily than magnesium atoms.
b)
Barium floats on the surface of the water but magnesium sinks in the water
c)
Barium hydroxide is less soluble than magnesium hydroxide.
d)
The sum of the 1st and 2nd ionisation energies of barium is more than that for magnesium.
3.
In an experiment, 0.600 mol of chlorine gas, Cl2, is reacted with an excess of hot aqueous
sodium hydroxide. One of the products is NaClO3.
3Cl2 + 6NaOH --> NaClO3 + 5NaCl + 3H2O
sodium hydroxide. One of the products is NaClO3.
3Cl2 + 6NaOH --> NaClO3 + 5NaCl + 3H2O
a)
21.3 g
b)
44.7 g
c)
63.9 g
d)
128 g
4.
Which of these statements are always correct?
1 The sum of the oxidation numbers of all the atoms in a compound is zero.
2 The oxidation number of sodium in a salt is positive.
3 The oxidation number of chlorine in a compound is negative.
1 The sum of the oxidation numbers of all the atoms in a compound is zero.
2 The oxidation number of sodium in a salt is positive.
3 The oxidation number of chlorine in a compound is negative.
a)
1,2, and 3 are correct
b)
1 and 2 are correct
c)
2 and 3 are correct
d)
Only 1 is correct
5.
Nitrogen and phosphorus are both in Group 15 of the Periodic Table. Phosphorus forms a
chloride with the formula PCl5 but nitrogen does not form NCl5.
Which statements help to explain this?
1. Nitrogen’s outer shell cannot contain more than eight electrons.
2. Nitrogen cannot have an oxidation state of +5.
3. Nitrogen is less electronegative than phosphorus
chloride with the formula PCl5 but nitrogen does not form NCl5.
Which statements help to explain this?
1. Nitrogen’s outer shell cannot contain more than eight electrons.
2. Nitrogen cannot have an oxidation state of +5.
3. Nitrogen is less electronegative than phosphorus
a)
1,2, and 3 are correct
b)
1 and 2 are correct
c)
2 and 3 are correct
d)
Only 1 is correct
6.
What is the formula for Silver III phosphate
a)
AgPO4
b)
Ag(PO4)3
c)
Ag III PO4
d)
AgP
7.
What is the name of this compound? Na2CO3
a)
Disodium carbonate
b)
Sodium III carbonate
c)
Sodium II carbonate
d)
Sodium carbonate
8.
What is the name of CaSO4
a)
Calcium sulfide
b)
Calcium sulfate
c)
Calcium sulfite
d)
Calcium II sulfate
9.
VO2 is called...
a)
Vanadium oxide
b)
Vanadium oxalate
c)
Vanadium II oxide
d)
Vanadium IV oxide
10.
Determine the concentration of 525 grams of lead (II) nitrate, Pb(NO3)2, dissolved in 1250 cm3 of solution.
a)
3.8 mol/dm3
b)
0.42 mol/dm3
c)
1.27 mol/dm3
d)
420 mol/dm3
11.
What is the oxidation of C in CH4?
a)
-4
b)
-1
c)
+4
d)
+1
12.
What is the oxidation number of Fe in FeO?
a)
+1
b)
-1
c)
+2
d)
-2
100 %
