Safety
What is an example of something that should NOT be worn during a lab?
open toed shoes, hair down, ripped shirt, loose or baggy clothing
True or False: All chemicals in the lab should be considered potentially dangerous
True
What is the first step of the scientific method?
1. To observe and question
What are the vocabulary terms we learned about when we did the candle observations?
Quantitative & Qualitative
What are the vocabulary terms we learned about by doing the target practice activity?
Accuracy & Precision
True or False: You do not need to wear safety goggles if you wear glasses.
FALSE
What is the acronym Miss Zielinski uses to remember Dependent Variable?
DM's (Dependent, what you're Measuring)
What is the base unit for measuring length?
Meters
Provide an example of QUANTITATIVE data from the candle activity.
When using the scale the mass of the candle was 10.1 g before we lit it.
When you hit every shot in the center of the target how would you describe this?
Accurate and Precise
Where will Miss Zielinski dispose of any broken glassware?
In the designated broken glassware container in the back corner of the classroom by the fancy new pencil sharpener.
How do you spell your teachers last name?
Zielinski
Define Independent Variable
These are the factors or conditions that you purposely change in an experiment.
“cause”
Provide three examples of QUALITATIVE data from the candle activity.
1. The wax felt slimy
2. The candle smelt like play dough
3. The wick turned a black color when we burned it.
Khalil just performed an experiment three times. His first trial was 16.5 seconds, second trial was, 16.2 seconds, and third trial was 15.9 seconds. The true value for this experiment is 18.2 seconds. How would you describe their results?
Precise
When using a razor blade or scalpel, always cut material _____________________.
away from you
The football players in the room were so excited about the milk lab that they decided to do it with the team after practice. They used skim milk and whole milk. Which milk worked the best and why?
Whole Milk because it contains full fat which is able to pull the particles of color faster.
What are constant variables?
Constants are variables kept the same in an experiment.
Define Quantitative Data & provide an example.
Numerical measurements
Ex. 17km, 9.5g, 12.3L, etc.
Ella just performed an experiment three times. Her first trial was 18.5 seconds, second trial was 18.2 seconds, and third trial was 18.0 seconds. The true value for this experiment is 18.2 seconds. How would you describe their results?
Accurate and Precise
When working with a group on a lab, describe in detail the actions you should take to meet our class expectations.
Wear appropriate lab safety attire the entire lab. Stay with your group (no running, no touching each other etc.). No eating or drinking. Follow the instructions. Clean and put back materials where you found them at the start of class.
Write a hypothesis for the firework milk lab in the proper format.
If we use whole milk then the colors will move towards the center of the petri dish at a faster rate.
Be able to write down two reasons why the scientific method is used by scientists.
1. Its standardized
2. Its repeatable
3. Its unbiased
4. It produces evidence
Define Qualitative Data & Provide an Example:
Subjective, non-numerical observations
Ex. Tall, blue, floral, etc.
Calvin just performed an experiment three times. His first trial was 20.0 seconds, second trial was, 16.2 seconds, and third trial was 27.9 seconds. The true value for this experiment is 18.2 seconds. How would you describe their results?
Neither Accurate nor Precise