1. While working on a class chemistry experiment, Rachel dropped a glass test tube filled with an...
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Transcript of 1. While working on a class chemistry experiment, Rachel dropped a glass test tube filled with an...
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. The white ring on a glass graduated cylinder is to
prevent it from breaking when it falls
3. In the lab, what will protect you from acid that spills out of a beaker?
ApronGogglesGloves
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. True or false, eating food or chewing gum is allowed in the lab.
False!
6. Using one or more of your senses (sight, touch, sound, taste, and smell) to identify or
learn about something
observation
7. A conclusion formed from available information or evidence
inference
8. A summary of observations
description
9. An interpretation of observations
explanation
10. A zebra has black and white stripes. This is an example of
An observation
11. Logan didn’t finish eating his lunch, he might be sick.
inference
12. Elephants weigh over 5 tons, is an example of an explanation or description
description
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. The variable that is changed (manipulated) in an experiment
Independent variable
15. The variable changes (responds) as a result of a change in the independent variable
Dependent variable
17. An explanation that can be tested with a scientific investigation.
hypothesis
16. A series of steps that scientists use when performing an experiment.
Scientific method
18. If the amount of water increases, then the height of the plant will increase. This is an
example of
A hypothesis
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. Physical Science is the study of
Matter and energy