PES Skill Sheets.book - Capital High School

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Page 2 of 2 • If beryllium (Be) combines with potassium iodide (KI) in a chemical reaction, what are the products? Solution: First, we decide which element of KI will be replaced by the beryllium. Since beryllium has an oxidation number of 2+, it replaces the element in KI that also has a positive oxidation number—the potassium (K 1+ ). It will therefore combine with the iodine to form a new compound. Because beryllium has an oxidation number of 2+ and iodine's oxidation number is 1–, it is necessary for two atoms of iodine to combine with one atom of beryllium to form an electrically neutral compound. The resulting chemical formula for beryllium iodide is BeI2. In single-displacement reactions, the component of the compound that has been replaced by the uncombined reactant now stands alone and uncombined. The resulting products of this chemical reaction, therefore, are BeI2 and K. Balancing the equation give us: Predict replacements Be + 2KI → BeI 2 + 2K 1. If Na 1+ were to combine with CaCl 2, what component of CaCl 2 would be replaced by the Na 1+ ? 2. If Fe 2+ were to combine with K 2Br, what component of K 2Br would be replaced by the Fe 2+ ? 3. If Mg 2+ were to combine with AlCl 3, what component of AlCl 3 would be replaced by the Mg 2+ ? Predict product formulas For the following combinations of reactants, predict the formulas of the products: 4. Li + AlCl 3 5. K + CaO 6. F 2 + KI Predicting chemical equations for displacement reactions Write complete balanced equations for the following combinations of reactants. 7. Ca and K 2S 8. Mg and Fe 2O 3 9. Li and NaCl 14.2
Name: Date: 14.2 Percent Yield You can predict the amount of product to expect from a reaction if you know how much reactant you started with. For example, if you start out with one mole of limiting reactant, you can expect to produce one mole of product. In real-world chemical reactions, the actual amount of product is usually less than the predicted amount. This is due to experimental error and other factors (such as the fact that some product is difficult to collect and measure). The amount of product you expect to produce is called the predicted yield. The amount of product that you are able to measure after the reaction is called the actual yield. The percent yield is the actual yield divided by the predicted yield and then multiplied by 100. Actual yield Percent yield = ----------------------------------- × 100 Predicted yield The percent yield can provide information about how carefully the experiment was performed. If a percent yield is low, chemical engineers look for sources of error. Manufacturers of chemical products try to maximize their percent yield so that they can get the maximum amount of product to sell from the reactants that they purchased. I • In the reaction below, potassium and water are combined in a chemical reaction that produces potassium hydroxide and hydrogen gas. If two moles of potassium (the limiting reactant) are used, what is the predicted yield of potassium hydroxide (KOH) in grams? 2K + 2H 2O → 2KOH + H 2 1. Looking for: Predicted yield of KOH in grams 2. Given: Two moles of the limiting reactant (K) are used 3. Relationships: Two moles of limiting reactant should produce two moles of product. Two moles of the product will have a mass twice its molar mass. 4. Solution: Molar mass of KOH = atomic mass of K + atomic mass of O + atomic mass of H From periodic table, molar mass of KOH = 39.10 + 16.00 + 1.01 = 56.11 grams Because we started with two moles of limiting reactant, we should end up with two moles, or 112.22 grams, of KOH. • If the actual yield of KOH was 102.5 grams, what was the percent yield for this reaction? 1. Looking for: Percent yield of KOH 2. Given: Actual yield = 102.5 g; predicted yield = 122.22 g 3. Relationships: Percent yield = actual yield ÷ predicted yield × 100 4. Solution: Percent yield = 102.5 g ÷ 112.22 g × 100 = 91.3% 14.2
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Chapter and Section Chapter 1: Meas
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Chapter and Section Chapter 5: Forc
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Chapter and Section Chapter 9: Heat
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Chapter and Section Chapter 14: Cha
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Chapter and Section Chapter 18: Ear
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Chapter and Section Chapter 24: Wav
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Name: Date: 1.1 Lab Safety What can
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Page 3 of 6 Safety quiz 1. Draw a d
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Page 5 of 6 c. You suddenly you beg
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Name: Date: 1.1 Using Your Textbook
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Page 2 of 3 The following prefixes
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Name: Date: 1.1 Scientific Notation
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Page 3 of 3 3. Write the numbers in
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Page 2 of 4 Example 1: Measuring ob
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Page 4 of 4 4. . Prefix Symbol Mult
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Name: Date: 1.2 Reading Strategies
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Name: Date: 1.2 Stopwatch Math What
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Name: Date: 1.2 Understanding Light
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Name: Date: 1.2 Indirect Measuremen
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Name: Date: 1.3 Dimensional Analysi
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Name: Date: Skill Builder Fractions
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Page 3 of 4 Solving fraction proble
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Name: Date: 1.3 Significant Digits
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Page 3 of 4 Follow these steps for
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Name: Date: 1.3 Study Notes This sk
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Name: Date: 1.3 Science Vocabulary
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Page 3 of 3 Using the table of pref
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Page 2 of 2 5. Earth’s moon is co
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Page 2 of 3 When precise conversion
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Name: Date: 1.4 Creating Scatterplo
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Page 3 of 3 g. What is the position
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Page 2 of 2 1.4 1. Given the variab
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Page 2 of 3 Step 3: Look at the ran
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Name: Date: 1.4 Recognizing Pattern
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Page 3 of 3 Answer the following qu
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Page 2 of 2 4. Measurements: List a
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Page 2 of 2 2. Your teacher shows y
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Page 2 of 4 Recording valid observa
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Page 4 of 4 b. How did the student
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Page 2 of 3 Name: Lucy O. Date: Jan
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Name: Date: 2.2 Using Computer Spre
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Page 3 of 3 5. The following data i
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Page 2 of 2 2. John notices that hi
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Name: Date: 3.1 Latitude and Longit
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Page 3 of 4 Use an atlas or globe t
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Name: Date: 3.1 Map Scales Mapmaker
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Page 3 of 3 f. Point Q to Point M g
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Page 2 of 5 It’s time to go! 3.1
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Page 4 of 5 37. Now you will head t
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Name: Date: 4.1 Vectors on a Map Yo
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Page 2 of 3 1. Draw a profile map o
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Name: Date: 3.3 Bathymetric Maps Im
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Page 1 of 2 3.3 Tanya Atwater Tanya
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Name: Date: 4.1 Solving Equations w
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Page 3 of 4 Use the formula V = l
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Name: Date: 4.1 Problem Solving Box
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Page 2 of 3 In problems 6 and 7, yo
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Name: Date: 4.1 Percent Error When
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Page 3 of 3 1. The lab group conduc
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Page 2 of 3 1. A bicyclist travels
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Name: Date: 4.1 Velocity Speed and
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Name: Date: 4.2 Calculating Slope f
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Name: Date: 4.2 Analyzing Graphs of
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Page 3 of 4 1. For each position-ti
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Name: Date: 4.2 Analyzing Graphs of
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Name: Date: 4.3 Acceleration Accele
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Name: Date: 4.3 Acceleration and Sp
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Page 3 of 3 3. Graph 3: 4. Find acc
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Page 2 of 3 Example 1: How fast wil
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Name: Date: 5.1 Ratios and Proporti
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Name: Date: 5.1 Internet Research S
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Name: Date: 5.1 Preparing a Bibliog
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Name: Date: 5.1 Mass vs. Weight Wha
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Page 2 of 2 1. A physical science t
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Page 2 of 2 How much does it weigh
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Page 2 of 2 Answer the following pr
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Name: Date: 5.3 Equilibrium When al
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Name: Date: 6.1 Net Force and Newto
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Page 2 of 2 Reading reflection 1. I
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Name: Date: 6.3 Applying Newton’s
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Name: Date: 6.3 Momentum Conservati
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Name: Date: 6.3 Collisions and Cons
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Name: Date: 6.3 Rate of Change of M
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Page 3 of 3 6. A 50.-g (0.050-kg) e
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Page 2 of 2 1. A machine uses an in
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Page 2 of 2 Example 3: A 500-newton
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Page 2 of 2 7. You pull your sled t
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Page 2 of 2 The relationship betwee
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Page 2 of 2 6. Use the gear ratio f
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Page 2 of 2 The three classes of le
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Page 2 of 2 3. Now, calculate the g
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Page 2 of 2 To do this calculation,
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Name: Date: 7.2 Energy Transformati
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Name: Date: 7.2 Conservation of Ene
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Page 2 of 2 Reading reflection 1. W
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Name: Date: 7.3 Power In science, w
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Name: Date: 7.3 Power in Flowing En
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Name: Date: 7.3 Efficiency and Ener
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Page 2 of 2 Reading the temperature
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Page 2 of 4 1. For each of the prob
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Page 4 of 4 1. Surface temperatures
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Page 2 of 2 The graph below shows a
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Name: Date: 9.1 Using the Heat Equa
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Name: Date: 10.1 Measuring Mass wit
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Page 3 of 3 Reading the balance cor
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Page 2 of 2 d. Explain how the disp
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Page 2 of 3 Calculating volume of a
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Name: Date: 10.1 Density The densit
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Name: Date: 10.3 Pressure in Fluids
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Name: Date: 10.3 Boyle’s Law The
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Name: Date: 10.4 Charles’s Law Ch
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Name: Date: 10.4 Archimedes 10.4 Ar
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Page 233 and 234: Page 2 of 3 Using temperature data
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Page 293 and 294: . Page 2 of 3 i. Switches 2, 3, and
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Page 305 and 306: Page 2 of 2 7. How much voltage wou
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Page 309 and 310: Page 2 of 2 In part (d) of problems
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Page 2 of 4 Determining the relativ
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Page 4 of 4 Extension—Creating cl
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Name: Date: 19.1 Earth’s Interior
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Page 2 of 2 Reading reflection 1. W
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Page 2 of 2 Reading reflection 1. E
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Name: Date: 19.4 Continental United
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Page 3 of 4 When a mountain is form
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Name: Date: 20.1 Averaging The most
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Page 2 of 5 Locating the epicenter
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Page 4 of 5 20.1 For each of the pr
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Name: Date: 20.2 Volcano Parts 20.2
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Name: Date: 21.2 Calculating Concen
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Name: Date: 21.2 Solubility In this
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Page 3 of 3 The influence of temper
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Page 2 of 3 Work through these exam
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Name: Date: 21.3 Calculating pH The
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Name: Date: 22.1 Groundwater and We
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Page 3 of 3 Testing the model: 1. W
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Name: Date: 24.1 Period and Frequen
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Page 2 of 2 2. Use the grids below
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Page 2 of 2 2. Use the grids below
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Page 2 of 3 x-axis (blocks) Height
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Name: Date: 24.3 Decibel Scale The
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Page 2 of 2 a. ____________________
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Page 2 of 2 2. Two students want to
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Name: Date: 24.3 Palm Pipes Project
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Page 3 of 3 6. Challenge: You can f
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Page 2 of 2 Answer the following pr
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Page 2 of 2 4. You see a chair that
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Page 2 of 2 a. ____________________
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Name: Date: 25.3 Using Ray Diagrams
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Page 2 of 2 Which way does the ligh
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Page 2 of 2 25.3 1. A lens has a fo
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Name: Date: 26.1 Gravity Problems I
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Name: Date: 26.1 Universal Gravitat
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Page 1 of 2 26.1 Nicolaus Copernicu
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Page 1 of 2 26.1 Galileo Galilei Ga
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Page 1 of 2 26.1 Johannes Kepler 26
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Name: Date: 26.1 Measuring the Moon
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Page 3 of 3 Semi-Circle Card: 26.1
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Page 2 of 2 Reading reflection 1. B
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Page 2 of 2 Part 2: Provisions for
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Page 1 of 2 27.1 Arthur Walker 27.1
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Name: Date: 27.2 The Inverse Square
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Page 2 of 3 1. Fill in the missing
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Name: Date: 28.1 Understanding Ligh
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Name: Date: 28.1 Parsecs You have a
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Page 1 of 2 28.1 Edwin Hubble Edwin
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Name: Date: 28.2 Light Intensity Pr
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Page 2 of 2 If we know the brightne
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Page 2 of 2 Solving Doppler Shift P
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13. A decimeter is 100 times larger
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Skill Sheet 1.3: Significant Digits
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7. Yes, there is a relationship bet
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6. The slope is the same (2.0) unti
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13. S Sh—Sand and shells on the b
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10. 410 miles 11. 6.6 miles -------
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Skill Sheet 4.2: Analyzing Graphs o
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Skill Sheet 5.1: Mass, Weight, and
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Skill Sheet 6.3: Applying Newton’
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Skill Sheet 7.1: Mechanical Advanta
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8. The middle gear turns left. The
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Skill Sheet 7.3: Power in Flowing E
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Skill Sheet 10.1: Calculating volum
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3. Answers are: a. 100 cm 3 b. 13 N
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Skill Sheet 11.3: Weather Maps Samp
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a. b. c. d. e f. Skill Sheet 12.2:
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Skill Sheet 14.1: Chemical Equation
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must be blocking their insulin’s
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8. The current is approximately the
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7. Students can find information ab
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Skill Sheet 17.4: Electrical Power
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Skill Sheet 19.1: Charles Richter 1
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Practice 2: 1. First problem is don
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Skill Sheet 21.3: Calculating pH 1.
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Question 8 (con’t) 9. The new wav
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Skill Sheet 25.2: The Human Eye a.
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Skill Sheet 26.1: Nicolaus Copernic
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Skill Sheet 27.1: Arthur Walker 1.
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