Scientific Method
What is the first step in the scientific method?
Observation/problem
32.1508
6 sig figs
Write 532.00 in scientific notation
5.32 x 10 ^ 2
Long hair in the lab should be..
tied back and kept entirely out of the way
Convert 4.972 km to m
4972 m
Making an educated guess on what will happen in an experiment is called
an hypothesis
How many sig figs are in:
900
1
Write 0.00084 in scientific notation
8.4 x 10 ^ -4
You are washing a beaker and accidentally drop it in the sink, it breaks. What should you do?
Tell the teacher so they can help you safely dispose of the glass
Convert 654 g to cg
65400 cg
In an experiment, why do we need a constant variable?
We use the constant to compare changes in the other variables.
How many sig figs are in:
34.950
Write 6.40 × 10-3 in standard form
0.0064
You have two test tubes of clear liquid. One is an acid and one is water, but you don't remember which is which. What should you do?
Tell the teacher so they can dispose of the liquids and get new samples.
Convert 6.87 L to mL
6780 mL
True/False:
If an experiment does not support your hypothesis, you should discard the whole experiment.
False, we can still learn information from an experiment even if it doesn't go the way you thought it would.
How many sig figs are in:
0.00075
2
Write 3.5 x 10 ^ 7 in standard form
35000000.
How do you dispose of any unused chemical after an experiment?
Dispose according to the instructions; not all chemicals should go down the sink!
Convert 895.9 dg to hg
0.8959 hg
Which part of the scientific method could be defined as:
accept or reject your hypothesis, and share your results
Conclusion
How many sig figs are in:
6.12 x 10 ^3
3
Write 7.543 x 10 ^2 in standard form
754.3
During an experiment, a chemical is splashed into a student's eyes. What should the student do?
Wash eyes out in the eyewash station
Convert 1,522,800 cm to km
15.228 km