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WorksheetsPhysical Chemistry
Total questions: 10
Worksheet time: 4mins
Name
Class
Date
1.
Molecules are tightly packed together
a)
solid
b)
liquid
c)
gas
2.
A chemical change happens when...
a)
a substance is changed at the atomic level
b)
bonds are broken and formed
c)
a new substance is made
d)
all of the above!
3.
Which of the following reactions is a combustion reaction ?
a)
MgCO3 + O2 → MgO + CO2
b)
C3H8 + 5O2 → 3CO2 + 4H2O
c)
6CO2 + 6H2O → C6H12O6 + 6O2
d)
6CO2 + 6H2O → C6H12O6 + 6O2
4.
Anything that has mass and takes up space is called
a)
volume
volume
volume
b)
matter
c)
magnetism
d)
electricity
5.
Which substance is most likely classified as a colloid?
a)
soft drink
b)
oxygen gas
c)
water
d)
fog
6.
Which compound results from covalent bonding?
a)
NH4Cl
b)
K2SO4
c)
NaCl
d)
C6H12O6
7.
Which compound will most likely be formed when lithium (Li) and nitrogen (N) are chemically combined?
a)
LiN
b)
Li3N
c)
LiN3
d)
Li3N3
8.
What makes something radioactive?
a)
elements with an atomic number above 81
b)
an unstable nucleus
c)
contaminated sewage
d)
It decays over time
9.
The process of splitting of the molecules into ions of an electrolyte is called..
a)
ionization
b)
electrolysis
c)
solvation
d)
protonation
10.
Colour of CuSO4 solution is
a)
green
b)
blue
c)
red
d)
yellow
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