Scientific Claims
What does systematic mean?
Controlled experimentation and data collection
The Meniscus
This is known as a label for a number.
How many feet is 200 inches?
16.67
What is 5,030g in scientific notation?
5.03 x 10^3 g
This is objective data from the real world that is typically quantitative
Evidence ; empirical
Which tool would be most appropriate for measuring 17.0 mL?
Graduated cylinder
This allows us to convert between units
Conversion factor
The conversion factor between Mm and m
1 Mm = 10^6 m
0.034L in scientific notation
3.4 x 10^-2 L
What process is known with the following steps: Observation, Question, Hypothesis, Experiment, Conclusion, Results
The Scientific Method
See slideshow:
12.6-12.9 mL
This tool is used to precisely measure ONE (typically small) volume.
Volumetric Pipette
52 Dekagrams is how many grams?
520
5.20 x 10^2
Which is greater?
2.2 × 10^5 or 6.1 × 10^4
2.2 x 10^5
What is the purpose of reasoning in CER?
Connect the claim to evidence
See slideshow:
Beaker minor marks every 25mLs, can only precisely measure to the nearest 5mL.
A sample is weighed multiple times, and each time it reads 6.22-6.23g less than the true value. Describe its accuracy and precision.
Not accurate.
Yes precise
750 mL is how many kL?
0.00075 or 7.5 x 10^-4
0.00067 = 67 × 10^-5
Is this correct? Explain.
Number needs to be between 1-10