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Honors Chemistry
Unit 1: Matter & Measurement
Homework & Handouts
Name: ___________________________________
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Unit 1 Textbook Problems & Homework
Homework #1_ Read Section 1.1 (pgs. 2-6) in the Masterton and Hurley textbook. Fill
in notes packet pgs. 1-3 as you read (beginning with the section entitled “Introduction
and Types of Matter”). This material will NOT be covered in class, BUT you will be
responsible for its content on tests/quizzes.
Homework #2_ (Introduction to Chemistry) – Answer Questions #1, 3, 5, 7, 9 from p. 20
in the textbook on a separate piece of paper
Homework #3_ Exponents & Scientific Notation Packet (see pgs. 2-6 in this packet) —
Read entire worksheet and fill in answers to all numbered exercises.
Homework #4_ (Measurement) Answer #11, 13, 15 from p. 20 in the textbook
Homework #5_ Complete Sig Figs Worksheet (see p. 7 in this packet) and answer #17,
19, 21, 27 from pages 20-21 in the textbook
Homework #6_ (Unit Conversion) Answer #33, 35, 39, 41, 43 from p. 21 in the textbook
Homework #7_ (Density) Answer #45, 47, 49, 51 from p. 22 in the textbook
Homework #8_ (Miscellaneous) Answer #59, 61, 65, 67, 69 from p. 22 in the textbook
Pgs. 2-6 - Complete all pages!
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Chapter 1  Matter and Measurement
SIGNIFICANT FIGURES & ROUNDING
Indicate the number of significant figures then round each to the number of significant figures indicated.
For example:
1.234
has ____4___ significant figures and, rounded to 2
significant figures, is ___1.2____
1.
0.6034
has ________ significant figures and, rounded to 2
significant figures, is __________
2.
12,700
has ________ significant figures and, rounded to 2
significant figures, is __________
3.
12,700.00 has ________ significant figures and, rounded to 1
significant figures, is __________
4.
0.000983
has ________ significant figures and, rounded to 2
significant figures, is __________
5.
123342.9
has ________ significant figures and, rounded to 5
significant figures, is __________
6.
6.023 x 1023has ________ significant figures and, rounded to 2
significant figures, is __________
7.
.005600
has ________ significant figures and, rounded to 1
significant figures, is __________
8.
10000.5006 has ________ significant figures and, rounded to 5
significant figures, is __________
9.
2.0 x 10-3
has ________ significant figures and, rounded to 1
significant figures, is __________
10.
3.456110
has ________ significant figures and, rounded to 3
significant figures, is __________
Given calculations and the answer, write the answers with the appropriate number of significant figures.
Example:
6.00 x 3.00
= 18
The answer should be
______18.0_____
1. 23 + 46
= 69
The answer should be
_______________
2. 23.0 + 46.0
= 69
The answer should be
_______________
3. 253 + 345.8
= 598.8
The answer should be
_______________
4. 56 – 35
= 21
The answer should be
_______________
5. 56.00 – 35.0
= 21
The answer should be
_______________
6. 46 x 12
= 552
The answer should be
_______________
7. 3.24 x 5.63
= 18.2412
The answer should be
_______________
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(2.355 + 2.645) x 10.00 = 50
The answer should be
_______________
9
654  32
= 20.4375
The answer should be
_______________
= 1.512 x 10-03
The answer should be
_______________
10. .024 x .063
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Practice Converting Between Metric Units
Practice the following metric conversions using dimensional analysis. Pay attention to significant
figures. Show your work and don’t forget to write a unit on the answer!
1) 2,037 mm = ___________________________ m
2) 70 hL = _____________________________ L
3) 21,367 cg = ______________________ kg
4) 0.0031 Mm = ________________________ km
5) 250 cL = __________________________ µL
6) 1367 Dg = ______________________________ ng