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WorksheetsWeek 3 Chemistry
Total questions: 20
Worksheet time: 17mins
Name
Class
Date
1.
How did Mendeleev arrange the elements?
a)
alphabetical
b)
density
c)
melting point
d)
atomic mass
2.
The vertical columns of the periodic table are called -
a)
groups.
b)
rows.
c)
periods.
d)
transition.
3.
The number at the top of each square on the periodic table is the ...
a)
atomic number
b)
atomic mass
c)
Chemical Symbol
d)
Element Name
4.
What is the chemical symbol for Lithium?
a)
H
b)
He
c)
Li
d)
N
5.
A horizontal row of elements in the periodic table.
a)
column
b)
group
c)
period
6.
Which is an alkali metal?
a)
Magnesium
b)
Iron
c)
Sodium
d)
Europium
7.
Which is a halogen?
a)
Helium
b)
Chlorine
c)
Oxygen
d)
Neptune
8.
The atoms along the staircase are called
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
9.
Which group of the periodic table is composed of inert (not reactive) gases?
a)
alkali metals
b)
alkaline earth metals
c)
halogens
d)
noble gases
10.
How many Valance electrons does Iodine Have?
a)
6
b)
16
c)
7
d)
17
11.
What is the charge on an Aluminium ion?
a)
3
b)
+3
c)
+2
d)
+1
12.
Which is the correct name for CaBr2?
a)
Calcium Bromine
b)
Bromine Calcium
c)
Calcium Bromide
d)
Carbon and Bromine
13.
When two atoms share electrons, a chemical bond is formed. This type of bond is called:
a)
covalent bond
b)
ionic bond
c)
crystal bond
d)
polyatomic bond
14.
Phosphorous trichloride
a)
PCl3
b)
P3Cl
c)
P3Cl3
d)
PCL
15.
What is the proper name for Cu2O?
a)
Copper oxide
b)
dicopper oxide
c)
copper (II) oxide
d)
copper (I) oxide
16.
Disulfur trioxide
a)
S3O2
b)
SO
c)
S2O3
d)
S2O
17.
What is the Law of Conservation of Matter?
a)
Matter can be created and destroyed
b)
Matter cannot be created nor destroyed
c)
Energy cannot be created nor destroyed
d)
Matter can only be created but not destroyed
18.
Carbon tetrahydride gas mixes with chlorine gas to yield carbon tetrachloride gas and hydrogen monochloride gas.
a)
CH+ Cl --> CCl + HCl
b)
CH4 + Cl2 --> CCl4 + HCl
c)
CH4O + Cl2 --> C4Cl + HCl
d)
CH + Cl --> CCl4 + H4Cl
19.
What is the coefficient on the HCl?
__Zn + __HCl --> __ZnCl2 + __H2
a)
1
b)
2
c)
4
d)
8
20.
What is the coefficient on the oxygen gas?
__P4 + __O2 --> __P2O5
a)
1
b)
3
c)
5
d)
7
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