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Inform the teacher - PowerPoint PPT Presentation

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Inform the teacher

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  1. 1. While working on a class chemistry experiment, Rachel dropped a glass test tube filled with an unknown liquid. What should Rachel do first? • Inform the teacher

  2. 2. The white ring on a glass graduated cylinder is to • prevent it from breaking when it falls

  3. 3. In the lab, what will protect you from acid that spills out of a beaker? • Apron • Goggles • Gloves

  4. 4. The best way to smell ammonia in a test tube is to take your hand and wave it over the test tube to lift the ammonia vapors towards your nose. This is called • wafting

  5. 5. True or false, eating food or chewing gum is allowed in the lab. • False!

  6. 6. Using one or more of your senses (sight, touch, sound, taste, and smell) to identify or learn about something • observation

  7. 7. A conclusion formed from available information or evidence • inference

  8. 8. A summary of observations • description

  9. 9.An interpretation of observations • explanation

  10. 10. A zebra has black and white stripes. This is an example of • An observation

  11. 11. Logan didn’t finish eating his lunch, he might be sick. • inference

  12. 12. Elephants weigh over 5 tons, is an example of an explanation or description • description

  13. 13. A scientific experiment that involves changing one factor and observing its effects on one thing while keeping all other things constant. • Controlled experiment

  14. 14. The variable that is changed (manipulated) in an experiment • Independent variable

  15. 15. The variable changes (responds) as a result of a change in the independent variable • Dependent variable

  16. 17. An explanation that can be tested with a scientific investigation. • hypothesis

  17. 16. A series of steps that scientists use when performing an experiment. • Scientific method

  18. 18. If the amount of water increases, then the height of the plant will increase. This is an example of • A hypothesis

  19. 19. Rene wanted to determine the effects of a soil pollutant on the growth of a sunflower plant. According to this information, what is the independent (manipulated) variable? • Soil pollutant

  20. 20. Physical Science is the study of • Matter and energy