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WorksheetsGeneral Chemistry
Total questions: 20
Worksheet time: 15mins
Name
Class
Date
1.
A scientist is working in the lab, with compounds containing carbon. She is most likely working in the field of
a)
Organic
b)
Inorganic
c)
Analytical
d)
Physical
2.
The smallest unit of matter that retains the properties of that matter is
a)
a molecule
b)
a compound
c)
a mixture
d)
an atom
3.
Which statement best describes an element?
a)
any combination of two or more atoms of different types
b)
a pure substance made up of only one kind of atom
c)
a substance containing only carbon atoms
d)
any kind of crystal
4.
Which of the following changes is a physical change of matter?
a)
water evaporating
b)
paper burning
c)
a nail rusting
d)
a silver spoon tarnishing
5.
Which of the following changes is a chemical change of matter?
a)
ice melting to produce water
b)
vinegar combining with baking soda to produce carbon dioxide
c)
water boiling to produce water vapor
d)
liquid silica solidifying to form glass
6.
Which of the following is an example of a heterogeneous mixture?
a)
tap water
b)
chunky peanut butter
c)
orange-colored sugar water
d)
gold ring
7.
Which of the following is a pure substance?
a)
air
b)
granite
c)
water
d)
stainless steel
8.
The horizontal rows of the periodic table are called
a)
periods
b)
columns
c)
groups
d)
families
9.
Which of these recorded observations is qualitative, rather than quantitative?
a)
A chemical reaction is complete in 2.3 s.
b)
The solid has a mass of 23.4 g.
c)
The compound melts at 87.5C.
d)
Iron is denser than aluminum.
10.
Which of these statements is true of the scientific method?
a)
The steps may vary somewhat to suit the experiment.
b)
Working scientists rarely use it.
c)
Scientists must follow its steps exactly.
d)
Scientists rarely publish results of experiments.
11.
Theories are considered successful only if they
a)
can be used to make accurate predictions.
b)
can be stated in simple terms.
c)
can be written in the form of an equation.
d)
have been accepted by all scientists.
12.
The SI base units for time and temperature are
a)
hour and degree Celsius.
b)
second and degree Celsius.
c)
hour and kelvin.
d)
second and kelvin.
13.
Which of these shows SI unit prefixes arranged in order from smallest to largest?
a)
centi, milli, kilo
b)
milli, centi, kilo
c)
kilo, milli, centi
d)
kilo, centi, milli
14.
A sample of bismuth has a mass of 343 g and a volume of 35.0 cm3.What is the density of bismuth?
a)
0.102 g/cm3
b)
9.80 g/cm3
c)
378 g/cm3
d)
1.20 104 g/cm3
15.
An object’s weight is a measure of
a)
the force with which it is attracted by gravity.
b)
the pressure exerted on a scale.
c)
the amount of material per unit volume.
d)
the force causing the object to move.
16.
The SI base unit for mass is the
a)
gram
b)
cubic centimeter
c)
meter
d)
kilogram
17.
The number of significant figures in the measurement 170.040 km is
a)
Three
b)
Four
c)
Five
d)
Six
18.
The dimensions of rectangular solid are measured to be 2.0 cm, 3.0 cm, and 4.0 cm. The volume should be recorded as
a)
24 cm3.
b)
12 cm3.
c)
9 cm3.
d)
6 cm3.
19.
Expressed in scientific notation, 0.0930 m is
a)
93 X 10-3 m
b)
9.3 X 10-3 m.
c)
9.30 X 10-2 m.
d)
9.30 X 10-4 m.
20.
When 2.02 X 1023 is multiplied by 3.1 X 10-31, the product is
a)
6.3 X 10-8
b)
6.3 X 108
c)
6.3 X 1054
d)
6.3 X 10-54
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