Chem 111-Study Guide Chapter 1.docx

**Chem 111 -- Sec. B** **Reading and Study Guide for Chapter 1** 1. Why can we say that salt and sugar are chemicals? 2. How can the scientific method help us to make decisions? 3. What are some things you can do to help you study and learn chemistry? **Match each of the following key te...

**Chem 111 -- Sec. B** **Reading and Study Guide for Chapter 1** 1. Why can we say that salt and sugar are chemicals? 2. How can the scientific method help us to make decisions? 3. What are some things you can do to help you study and learn chemistry? **Match each of the following key terms with the correct definition:** 1. Scientific method 2. Experiment 3. Hypothesis 4. Theory 5. Chemistry a. \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ An explanation of nature validated by many experiments. b. \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_The study of substances and how they interact. c. \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ A possible explanation of a natural phenomenon. d. \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ The process of making observations, writing a hypothesis, and testing with experiments. e. \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ A procedure used to test a hypothesis. **Indicate if each of the following is a chemical.** a. \_\_\_\_\_ aluminum b. \_\_\_\_\_\_ heat c. \_\_\_\_ sodium fluoride in toothpaste d. \_\_\_\_ ammonium nitrate in fertilizers e. \_\_\_\_\_ time **Identify each of the following as an observation (O), hypothesis (H), or experiment (E).** a. \_\_\_\_\_ Sunlight is necessary for the growth of plants. b. \_\_\_\_\_ Plants in the shade were shorter than plants in the sun. c. \_\_\_\_\_\_ Plant leaves are covered with aluminum foil and their growth measured. d. \_\_\_\_\_\_ Fertilizer is added to plants. e. \_\_\_\_\_\_ Ozone slows plant growth by interfering with photosynthesis. f. \_\_\_\_\_\_ Ozone causes brown spots on plant leaves.