WorksheetsBMS1050 chem
Total questions: 6
Worksheet time: 3mins
Name
Class
Date
1.
How many electrons can the p subshell hold in total?
a)
2
b)
4
c)
6
d)
10
2.
Which is NOT a way to express 200 mM
a)
0.2 M
b)
0.2 M l-1
c)
200 mmol/l
d)
200,000 μM
3.
What type of bonding holds the atoms in a molecule of ammonia (NH3) together?
a)
Hydrogen
b)
Ionic
c)
van der Waals
d)
Covalent
4.
HCl is a polar molecule. Why is this?
a)
Cl is more electronegative than H
b)
Cl- is negative, H+ is positive
c)
Cl has more protons than H
d)
Cl atoms are bigger than H
5.
A reaction has a ΔH of -140 kJ mol-1. Is it:
a)
Exothermic
b)
Endothermic
c)
Exergonic
d)
Endergonic
6.
Which property is NOT an important factor in determining whether a reaction is feasible?
a)
Entropy change
b)
Temperature
c)
Rate
d)
Energy change
100 %
