Reading Comprehension Questions Section 23-1

Reading Comprehension Questions Section 23-1

<p>Reading Questions 5.3 Name ______Balancing Chemical Equations Pp. 161 – 168</p><p>1. Write the five chapter objectives here: a. </p><p> b.</p><p> c. </p><p> d. </p><p> e. 2. Look at Figure 5-9 on page 155. Copy the written equation at the bottom of the figure.</p><p>3. What is the name of this reaction in Figure 5-9? 4. What is the main component in natural gas? 5. What do chemical equations do? 6. Draw, color, and label Figure 5-13 on page 155. Show the equation as: a. Model of molecules:</p><p> b. Words: c. Molecular formula: 7. What does the arrow in a chemical equation mean? 8. When the Law of Conservation of Mass is illustrated in a chemical equation, what does this mean about the equation? 9. As the following equation is written, count how many atoms of each element are reactants and products.</p><p>CH4 + O2  CO2 + H2O Reactants Products # of C = # of C = # of H = # of H = # of O = # of O = </p><p>10. When we balance equations, what number can’t we touch? 11. Changing this results in what? 12. How are we going to balance the equation? 13. Write the balanced equation here: 14. In this equation, how many molecules of: a. Oxygen react? b. Water are formed? c. Carbon Dioxide are formed? d. Methane react? 15. Copy the “Practice Hint” from page 165 here.</p><p>16. What coefficient is never shown? 17. Balanced equations can indicate how many atoms of an element there are as well as how many molecules of a chemical there is. What else can a balanced equation describe? 18. Copy what the Law of Definite Proportions states:</p><p>19. What is the mole ratio of the formation of water? ______H2 : ______O2 : ______H2O 20. Copy the four summary points here:  </p><p> </p><p> </p><p> </p>

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