Lab safety
10 Lab Safety Techniques
1. Always wear safety goggles/glasses when engaging in lab and cleanup.
2. Never hold a test tube underneath your face, if you need to smell a chemical then waft it.
3. Know where the shower and eye wash station is located.
4. Should you find chipped or cracked glassware, report it to the teacher immediately for proper disposal.
5. Inform the teacher about any injuries you may sustain, even minor cuts.
6. Make sure to properly clean up and dispose of materials the correct way.
7. Educate yourself on the location of the fire extinguisher and the fire escape routes.
8. Wear appropriate clothing during lab (and possibly an apron), and make sure any long hair is up and out of the way.
9. Absolutely no horseplay or rambunctious behavior.
10. Keep a clean and organized space.
1. Always wear safety goggles/glasses when engaging in lab and cleanup.
2. Never hold a test tube underneath your face, if you need to smell a chemical then waft it.
3. Know where the shower and eye wash station is located.
4. Should you find chipped or cracked glassware, report it to the teacher immediately for proper disposal.
5. Inform the teacher about any injuries you may sustain, even minor cuts.
6. Make sure to properly clean up and dispose of materials the correct way.
7. Educate yourself on the location of the fire extinguisher and the fire escape routes.
8. Wear appropriate clothing during lab (and possibly an apron), and make sure any long hair is up and out of the way.
9. Absolutely no horseplay or rambunctious behavior.
10. Keep a clean and organized space.
Safety Equipment
Scientific Method
- 1. Make an observation.
- 2. Conduct research.
- 3. Form hypothesis.
- 4. Test hypothesis.
- 5. Record data.
- 6.Draw conclusions.
- 7. Replicate.
Independent Variable- The parameter that the scientist changes manually.
Dependent Variable- The parameter that changes based on the outcome of the experiment.
Control Group- This is an unaltered group or a known outcome that is used for a comparison.
Constants- Conditions that do not change at all in the experiment.
Laws vs. Theories
A law is defined as a statements of fact, deduced from observation and always occurring if certain conditions are present.
Thermodynamic Laws are examples of laws. They state that you have to give up either mass or energy, that heat always moves from higher to lower concentrations and that absolute zero is impossible.
The Law of Gravitation is another law of nature. It states that any two objects express a gravitational force on each other, and this is true for any set of objects in the universe. |
A theory is defined as a supposition or system of ideas intended to explain something.
General Relativity is a theory. It states that gravity is not a force but rather a curvature of space-time, and opened up scientists eyes to the history of the universe.
Heliocentrism may seem odd, but it is actually the first revolutionary theory. It consists of the idea that the Earth revolves around the sun, and this idea was so new and profound that it is literally where the word revolutionary came from. |