WorksheetsMidterm Review #2
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
Which of the following forms a -1 charge?
a)
Na
b)
K
c)
H
d)
F
2.
Convert 0 K to Celcius.
a)
-173
b)
-73
c)
-373
d)
-273
3.
In which is the name and formula correct?
a)
potassium chloride K2Cl2
b)
aluminum fluorate, AlF3
c)
iron (II) oxide, Fe2O3
d)
tin (IV) bromide, SnBr4
4.
Which is a chemical change?
a)
melting cheese
b)
mixing two cheeses together
c)
grating cheese
d)
fermenting cheese
5.
Which of the following has a triple bond?
a)
carbon
b)
fluorine
c)
nitrogen
d)
oxygen
6.
Which color of visible light has the shortest wavelength?
a)
yellow
b)
green
c)
violet
d)
blue
7.
Which scientist developed the quantum mechanical model?
a)
Schrodinger
b)
Einstein
c)
Bohr
d)
Rutherford
8.
Emission of light occurs when an electron___?
a)
moves within an energy level
b)
jumps from a lower to a higher
c)
drops from a higher to a lower
d)
is absorbed by the nucleus.
9.
How many moles are in 4.8 x 1025 atoms of W?
a)
.13
b)
80.
c)
.013
d)
800.
10.
What does the 84 in Kr-84 represent?
a)
atomic number
b)
mass number
c)
number of neutrons
d)
number of electrons
11.
What is the correct name of CoCl2?
a)
cobalt(II) chloride
b)
cobalt(I) chlorate
c)
cobalt(I) chloride
d)
cobalt(II) chlorate
12.
What is the formula of sulfuric acid?
a)
H2S
b)
H2SO4
c)
H2SO2
d)
H2SO3
13.
What is the percent composition of Cr in BaCrO4?
a)
9.47
b)
25.2
c)
4.87
d)
20.5
14.
What is the number of moles in 36g Be?
a)
4.0
b)
45.0
c)
320
d)
.25
15.
The atomic number is the total number of which particle in the nucleus?
a)
neutrons
b)
electrons
c)
protons and electrons
d)
protons
16.
Of the following, which has the smallest ionization energy?
a)
Al
b)
B
c)
C
d)
Si
17.
What type of reaction is 2H2 + O2 = 2H2O
a)
synthesis
b)
decomposition
c)
single replacement
d)
double replacement
18.
Which of the following is a transitional metal?
a)
Cs
b)
Te
c)
Cu
d)
Sn
19.
Which element has the lowest electronegativity?
a)
Br
b)
F
c)
Li
d)
C
20.
According to the activity series, which metal can replace H from water?
a)
Au
b)
Hg
c)
Co
d)
Li
100 %
