8th grade Chapter 1 Study Guide Answer the following as completely as possible. Use your notebook assignments to help you prepare for your first test. If you cannot find the information in your notebook, than refer to your textbook. 1. Define Qualitative. Three different examples. 2. Define Quantitative. Three different examples. 3. Describe the different between an inference and an observation. 4. Know how to calculate Volume. Try this: If a shoe box measures 6 cm high, 7 cm wide, and 20 cm long, what is its volume? A box is 60cm, 45cm, 25 cm, what is its volume? 5. Know how to calculate Density. Try these: A piece of metal is 32.4 g and has a volume of 24.9 cc, what is its density? What is the density of a substance if its mass is 36.7g and its volume is 1.57cm3? If a sample that has a volume of 5.25cm3 and a mass of 97.4g its density would be... A piece of wood that measures 3.0 cm by 6.0 cm by 4.0 cm has a mass of 80.0 grams. What is the density of the wood? 6. Understand how to use the rules of significant figures. Try these: 8.4 x 104 20.003 0.003000 7000 7. Complete these calculations with the correct significant figure answer: 6x6 2.34 – 1.293 10.37 - 4 12.47/3.2 (8.41 X 2.873) + 4.77 8. What are the metric prefixes and their values? 9. Convert these problems: 500 mL = _______ L 56789 ml = _______ L 5.5 cm = ________ mm 500 g = _______ mg 25 m = ________ mm 234 kg = ________ mg 789 mL = ______ kL 1400 g = _______ kg 1600m = ________ km 258 g = _______ kg 658.3 cm = _______ m 625.365 mm = _______ m 10. Define independent variable, dependent variable, and control variable. 11. Devise an investigate question and then determine the independent variable, dependent variable, and control variable. 12. Rewrite your lab safety rules.