WorksheetsChemistry first semester review
Total questions: 19
Worksheet time: 10mins
Name
Class
Date
1.
As the frequency of a wave decreases, the wavelength of the wave
(a)
2.
Which is a qualitative measurement?
a)
color
b)
mass
c)
time
d)
length
3.
Which is a quantitative measurement?
a)
hardness
b)
color
c)
taste
d)
temperature
4.
What is the term that describes the amount of matter in an object?
(a)
5.
Which value has only four significant digits?
a)
6.930
b)
0.0450
c)
8450
d)
0.392
6.
The accepted value for a quantity is 5.67 g. If the measured value is 5.89 g, what is the percent error?
a)
1.04 %
b)
3.74 %
c)
3.68 %
d)
3.88 %
7.
What is the state of matter that has a definite shape and definite volume?
(a)
8.
Which is an extensive physical property?
a)
color
b)
length
c)
density
d)
boiling point
9.
Which is an intensive physical property?
a)
color
b)
mass
c)
length
d)
volume
10.
Which is an example of a homogeneous mixture?
a)
sand
b)
clean air
c)
vegetable soup
d)
fresh squeezed orange juice
11.
What is the separation technique that relies on the different boiling points of the parts of the mixture?
a)
filtration
b)
distillation
c)
chromatography
d)
crystallization
12.
Which is the separation technique that identifies parts of a mixture based on how fast different compounds move across a material?
a)
filtration
b)
distillation
c)
chromatography
d)
crystallization
13.
Which one is comprised of the other three?
a)
proton
b)
atom
c)
electron
d)
neutron
14.
An object has a mass of 26.94 grams and a volume of 2.568 cubic centimeters. What material is it likely to be made of?
a)
Iron 7.874
b)
Gold 19.32
c)
Silver 10.49
d)
Copper 8.92
15.
Which technique uses a porous barrier to separate a solid from a liquid?
a)
Filtration
b)
Chromatography
c)
Crystallization
d)
Distillation
16.
Which element has the electron configuration 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d4
a)
Titanium
b)
Chromium
c)
Sulfur
d)
Selenium
e)
none of these
17.
How many valence electrons are present in Silicon?
a)
1
b)
2
c)
3
d)
4
e)
6
18.
According to the Law of Conservation of Mass, in any chemical change
a)
the mass of reactants is greater than the mass of products.
b)
the mass of reactants is less than the mass of products.
c)
the mass of reactants is equal to the mass of products.
d)
the masses of products and reactants have no predictable relationship.
19.
Write the ground state electron configuration of a germanium atom, using noble-gas notation (short cut)
(a)
100 %
