Name ______________________________ Class ___________________ Date __________________
Chemistry Practice Test
Ch. 1-2
In the space provided, write the letter of the term or phrase that best completes
each statement or best answers each question.
_____ 1. A scientist is working in the lab, with compounds containing carbon.
She is most likely working in the field of
a. inorganic chemistry.
b. theoretical chemistry.
c. organic chemistry.
d. None of the above
_____ 2. The branch of chemistry called analytical chemistry most likely would
be used in determining the
a. economic effects of a new substance.
b. chemical composition of a new substance.
c. effect of a chemical compound on living things.
d. uses of a particular metal.
_____ 3. A scientist is working with mathematical and computer models to learn
about the principles at work in a chemical reaction. He is working in
the field of
a. theoretical chemistry.
b. physical chemistry.
c. biochemistry.
d. analytical chemistry.
_____ 4. Research that is carried out for the sake of increasing knowledge, such
as research into the properties of a substance, is considered to be
a. applied research.
b. basic research.
c. technological development.
d. None of the above
_____ 5. A scientist is working to improve a product that uses fiber optics. This
is an example of
a. applied research.
b. basic research.
c. technological development.
d. Both (a) and (c)
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Modern Chemistry
1
Chapter Test
Name ______________________________ Class ___________________ Date __________________
Chapter Test A, continued
_____ 6. 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.
_____ 7. 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
_____ 8. Which of the following is an extensive property of matter?
a. boiling point
b. density
c. volume
d. melting point
_____ 9. Which of the following is an intensive property of matter?
a. energy content
b. density
c. volume
d. mass
_____ 10. 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
______11.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
_____ 12. A homogeneous mixture is one that
a. contains only one element.
b. is uniform in composition.
c. cannot change state easily.
d. acts as a solvent.
_____ 13. Homogeneous mixtures are also called
a. atoms.
b. solutions.
c. molecules.
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Modern Chemistry
2
Chapter Test
Name ______________________________ Class ___________________ Date __________________
_____ 14. Expressed in scientific notation, 0.0930 m is
a. 93 × 10− 3 m.
b. 9.3 × 10− 3 m.
c. 9.30 × 10− 2 m.
d. 9.30 × 10− 4 m.
_____ 15. The number of significant figures in the measurement 170.040 km is
a. three.
b. four.
c. five.
d. six.
_____ 16. The SI base unit for mass is the
a. gram.
b. cubic centimeter.
c. meter.
d. kilogram.
3
_____ 17. The unit cm is used to express
a. length.
b. mass.
c. volume.
d. time.
SHORT ANSWER Answer the following questions in the space provided.
1. Classify each of the following as a homogeneous or heterogeneous substance.
_______________ a. sugar
_______________ d. salt and
pepper
_______________ b. iced tea
_______________ e. cement
sidewalk
_______________ c. granola bar
2. The mass of a 5.00 cm3 sample of clay is 11.0 g. What is the density of the
clay?
3. A sample thought to be pure lead occupies a volume of 15.0 mL and has a mass
of 160.0 g.
__________________ a. Determine its density.
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Modern Chemistry
3
Chapter Test
Name ______________________________ Class ___________________ Date __________________
__________________ b. Is the sample pure lead? (Refer to Table 4 on page
38 of the text.)
____________________ c. Determine the percentage error, based on the
accepted value for the density of lead.
4. Three students were asked to determine the volume of a liquid by a method of
their choosing. Each performed three trials. The table below shows the results.
The actual volume of the liquid is 24.8 mL.
Trial 1
(mL)
Trial 2
(mL)
Trial 3
(mL)
Student A
24.8
24.8
24.4
Student B
24.2
24.3
24.3
Student C
24.6
24.8
25.0
__________________ a. Considering the average of all three trials, which
student’s measurements show the greatest
accuracy?
__________________ b. Which student’s measurements show the greatest
precision?
5. Convert to the following units:
a.) 22 s = _________________ms
b.) 3.5 mg = __________________ dg
c.) 1.59 mL = _____________ microliter d.) 165 cm2 = _________________ m2
e.) 34.5 km = _______________ m
f.) 7500 pL = ________________mL
g.) 66 cm3 = ________________L
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Modern Chemistry
4
Chapter Test