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Name Date Section 3.2 How Atoms Combine (continued) Main Idea Chemical Reactions Details Identify the meaning of symbols in a chemical formula by writing the meaning in words below each symbol. Use with page 64. Mixtures and Solutions + 2H2 O2 2H2O Summarize information about mixtures and solutions by completing the graphic organizer below. Answers may vary for examples. Use with pages 65â66. Example: Homogeneous mixtures (or ) gases Example: Mixtures Example: Example: mixtures Label the pH scale to help you understand and remember pH. Write under the acidic and the base parts of the scale two facts about and an example of each. Distilled water pH 7 Tomato pH 4 Lemon pH 2 0 Milk pH 6 1 2 3 4 More acidic R EAL-W ORLD CONNECTION 5 Household ammonia pH 11 Antacid pH 10 6 7 13 14 Matter and Atomic Structure 31 Neutral 8 9 Drain cleaner pH 13 10 11 12 More basic Compare and contrast chemical equations and algebraic equations.