Portage Learning / CHEM 103 / Module 1 to 6 Exam answers 2025|2026 UPDATED A+ RATED

IntroductionTo General, Organic, AndBiological Chemistry With Lab a
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CHEM 120/103 MODULES EXAM COLLECTION qa a
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2025 FINEST MOD 1-6 PRE PREDICTOR EXAM
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GUARANTEED PASS
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MODULE 1 EXAM qa qa




Click this link to access the Periodic Table. This may be helpful throughout the
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exam.
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1. Convert 845.3 to exponential form and explain your answer. qa qa qa qa qa qa qa qa




2. Convert 3.21 x 10-5 to ordinary form and explain your answer. qa qa qa
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1. Convert845.3=largerthan1=positiveexponent,movedecimal2places a
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= 8.453 x 102
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2. Convert3.21x10-5 =negativeexponent=smallerthan1,movedecimal5 a
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places = 0.0000321 qa qa




QUIZ# 2 q a




Click this link to access the Periodic Table. This may be helpful throughout the
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exam.
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Using the following information, do the conversions shown below, showing all work:
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1ft=12inches
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q 1pound=16oz a
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q 1gallon=4quarts
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1 mile= 5280 feet
qa qa qa qa 1ton=2000pounds
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q 1quart=2pints
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kilo(=1000) a
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1/100)
qa qa deci (= 1/10) qa qa




1. 24.6 grams = ? kg qa qa qa qa

,IntroductionTo General, Organic, AndBiological Chemistry With Lab
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2. 6.3ft=?inches a
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1. 24.6 grams x 1 kg / 1000 g = 0.0246 kg
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2. 6.3 ft x 12 in / 1 ft = 75.6 inches
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please always use the correct units in your final answer
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QUIZ# 3 qa

,IntroductionTo General, Organic, AndBiological Chemistry With Lab a
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Click this link to access the Periodic Table. This may be helpful throughout the
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exam.
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Do the conversions shown below, showing all work:
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1. 28oC=?oK a
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2. 158oF = ?oC qa a
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3. 343oK = ? oF qa a
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1. 28oC + 273 = 301 oK qa qa qa qa qa
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C→oK(makelarger)
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+273
2. 158oF - 32 ÷ 1.8 = 70 oC qa qa qa qa qa qa qa
o
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-32÷1.8 a
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3. 343oK - 273 =70 oC x 1.8 +32 =158 oF qa qa qa a
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QUIZ# 4 q a




Click this link to access the Periodic Table. This may be helpful throughout the
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exam.
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Be sure to show the correct number of significant figures in each calculation.
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1. Show the calculation of the mass of a 18.6 ml sample of freon with qa qa qa qa qa qa qa qa qa qa qa qa qa




density of 1.49 g/ml
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2. Show the calculation of the density of crude oil if 26.3 g occupies 30.5 ml.
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1. M=DxV=1.49x18.6=27.7g
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2. D =M /V=26.3 /30.5 = 0.862 g/ml
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QUIZ# 5 q a




Click this link to access the Periodic Table. This may be helpful throughout the
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exam.
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1. 3.0600 contains ? significant figures. q a q a qa q a




2. 0.0151 contains ? significant figures. q a q a qa q a

, IntroductionTo General, Organic, AndBiological Chemistry With Lab
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3. 3.0600÷0.0151=?(giveanswertocorrectnumberofsignificant
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figures)
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1. 3.0600 contains 5 significant figures. qa q a qa qa




2. 0.0151 contains 3 significant figures. qa qa qa qa




3. 3.0600 ÷ 0.0151 = 202.649 = 203 (to 3 significant figures for 0.0151)
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QUIZ# 6 q a




Click this link to access the Periodic Table. This may be helpful throughout the
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exam.
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Classify each of the following as an element, compound, solution or heterogeneous
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mixture and explain your answer.
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1. Coca cola qa




2. Calcium
3. Chili


1. Coca cola - is not on periodic table (not element) - no element names (not
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compound)
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appearstobeonesubstance=Solution a
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2. Calcium - is on periodic table = Element qa qa qa qa qa qa qa




3. Chili - is not on periodic table (not element) - no element names (not
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compound)
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appears as more than one substance (meat, beans, q a q a q a q a q a q a q a




sauce)= HeteroMix
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QUIZ# 7 q a




Click this link to access the Periodic Table. This may be helpful throughout the
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exam.
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Classify each of the following as a chemical change or a physical change
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1. Charcoal burns q a




2. Mixing cake batter with water qa qa qa qa