First Semester Notebook

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24 For addition and subtraction, look at the decimal portion (i.e., to the right of the decimal point) of the numbers ONLY. Here is what to do: 1) Count the number of significant figures in the decimal portion of each number in the problem. (The digits to the left of the decimal place are not used to determine the number of decimal places in the final answer.) 2) Add or subtract in the normal fashion. 3) Round the answer to the LEAST number of places in the decimal portion of any number in the problem. 1) 43.287 + 5.79 + 6.284 = _______ Solve the Problems and Round Accordingly... 2) 87.54 - 3.3 = _84.2______ 3) 99.1498 + 6.5397 + 9.7 = __115.4_____ 4) 5.868 - 5.1 = __0.8_____ 5) 59.9233 + 86.21 + 99.396 = __245.53_____ 6) 7.7 + 26.756 = _34.5______ 7) 66.8 + 2.3 + 4.8516 = _74.0______ 8) 9.7419 + 43.545 = _53.287______ 9) 4.8976 + 48.4644 + 1.514 = _54.876______ 10) 4.335 + 35.85 = _40.19______ 11) 9.448 - 1.7 = __7.7_____ 12) 75.826 - 8.6555 = _67.170______ 13) 57.2 + 23.814 = __81.0_____ 14) 77.684 - 4.394 = __73.290_____ 15) 26.4496 + 3.339 = _29.789______ 16) 9.6848 + 29.85 = _39.53______ 17) 63.11 + 2.5412 + 4.93 = __70.58_____ 18) 11.2471 + 75.4 = _86.6______ 19) 73.745 - 8.755 = __64.990_____ 20) 6.5238 + 1.7 + 27.79 = _36.0______ worked out on paper
25 The following rule applies for multiplication and division: The LEAST number of significant figures in any number of the problem determines the number of significant figures in the answer. This means you MUST know how to recognize significant figures in order to use this rule. Solve the Problems and Round Accordingly... 1) 0.6 x 65.0 x 602 = __________ 2) 720 ÷ 7.7 = __________ 3) 929 x 0.3 = __________ 4) 300 ÷ 44.31 = __________ 7 62 5) 608 ÷ 9.8 = __________ 6) 0.06 x 0.079 = __________ 0.005 4,000 7) 0.008 x 72.91 x 7000 = __________ 8) 73.94 x 67 x 780 = __________ 3,900,000 9) 0.62 x 0.097 x 40 = __________ 2 10) 600 x 10 x 5030 = __________ 30,000,000 11) 5200 ÷ 4.46 = __________ 1,200 12) 0.0052 x 0.4 x 107 = __________ 0.2 13) 0.099 x 8.8 = __________ 0.87 14) 0.0095 x 5.2 = __________ 0.049 15) 8000 ÷ 4.62 = __________ 2,000 16) 0.6 x 0.8 = __________ 0.5 1.9 17) 2.84 x 0.66 = __________ 18) 0.5 x 0.09 = __________ 0.05 19) 8100 ÷ 34.84 = __________ 230 20) 8.24 x 6.9 x 8100 = __________ 460,000
Page 2 and 3: Honors Chemistry Class Policies and
Page 4 and 5: 2 Unit 1 (22 days) Chapter 1 Introd
Page 6 and 7: 4 Lorenzo Walker Technical High Sch
Page 8 and 9: MUSTANG LABORATORIES COMMITMENT TO
Page 10 and 11: 8 Chapter 1 Unit 1 Introduction to
Page 12 and 13: 10 Benchmark: Determine appropriate
Page 14 and 15: 2. One cereal bar has a mass of 37
Page 16 and 17: 1. How many meters are in one kilom
Page 18 and 19: 16 The Learning Goal for this assig
Page 20 and 21: RULE #3: To add/subtract in scienti
Page 22 and 23: The Learning Goal for this assignme
Page 24 and 25: 22 Rule 3: A final zero or trailing
Page 28 and 29: Dimensional Analysis This is a way
Page 30 and 31: Unit 3 Chapter 25 Nuclear Chemistry
Page 32 and 33: Name ____________________ Go to the
Page 34 and 35: Learning Goal for this section: Exp
Page 36 and 37: Beta Particle Decay Beta decay is a
Page 40 and 41: Ion Charge? What is the charge on f
Page 44 and 45: C 2 H 6 O Ethanol CH 3 CH 2 O Step
Page 46 and 47: Linear Molecular Geometry Orbital E
Page 48 and 49: Bent Molecular Geometry Orbital Equ
Page 50 and 51: Trigonal Pyramidal Molecular Geomet
Page 52 and 53: Trigonal BI Pyramidal Molecular Geo
Page 54 and 55: Octahedral Molecular Geometry Orbit
Page 56 and 57: Orbitals Equation Lone Pairs Angle
Page 58 and 59: Chapter 9 Unit 4 Chemical Names and
Page 60 and 61: Learning Goal: Determine the proper

First Semester Notebook

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