Variables & Methods of Science
What is the main motivation for scientific research most of the time?
MONEY
What are the two types of glassware? Name an example of each.
Volumetric (graduated cylinders, volumetric flasks, volumetric pipettes, etc.) and Non-Volumetric (beakers, Erlenmeyer flasks, test-tubes, etc.)
Convert 7.8 * 10^9 back to standard notation (must walk through answer on whiteboard)
7,800,000,000
(a.k.a. 7.8 billion)
Convert 1200 mL to kL. Must show work on the whiteboard using the fence method.
0.0012 kL
What is Mr. Landes' first name?
Grant
Explain the difference between the 3 types of variables.
Independent: the variable that scientists directly manipulate/change.
Dependent: the variable that changes as a result of what we did to the independent variable.
Control: the variable(s) that we keep constant so that our results are not unintentionally altered.
What must be done before measuring mass on a digital scale?
You must zero/tare the scale.
What are the three things that can occur based on an object's density when placed into a liquid (i.e. what happens when the object is more dense, less dense, or equal in density to the liquid)?
Higher density = sink
Lower density = float
Same density = suspended in the liquid
What 2 temperature units are primarily used in Chemistry?
Celsius & Kelvin
What breed is Mr. Landes' beloved dog, Maeve?
Black Lab or Black Lab mix
Jessica tells James that he is acting like a bad boyfriend because he is a Scorpio. She is referencing astrology, which is an example of what type of "science"?
Pseudoscience
What piece of equipment should be used to move hot glassware (such as beakers or flasks)?
tongs or rubber grabbers
If I have a 10-gram sample of Iron and a 1-kilogram sample of Iron, how do their densities compare?
They have the same density regardless of the amount because they are the same substance.
How many minutes are in a year? (must show work on whiteboard with fence method)
525,600
If Mr. Landes is going to drink an energy drink, it almost always has to be _________.
Sugar-free, zero-sugar, or low sugar
What makes observations different from inferences?
We make observations during experiments based on what we see, smell, feel, hear, etc., whereas we make inferences after the experiment based on the data that we gathered in an attempt to explain why something happened.
Besides a fire extinguisher, what can you use to put out a fire in Chemistry lab?
The Fire Blanket (Located next to Mr. Landes' desk)
What is -0.00006007 in scientific notation? (Must walk through your answer on the whiteboard)
-6.007 * 10^-5
How do derived units differ from base SI units?
Derived units are some combination of multiple SI units (ex: m/s, m^3, kg/L, etc.)
How many countries has Mr. Landes been to outside of the US? (double points if you can name all of them)
5 (UK, Ireland, Netherlands, Germany, & Belgium).
Provide a hypothesis for how Mr. Landes could ask for a raise from Mrs. Grigsby. (must use the proper structure for a hypothesis)
Multiple answers, but an example:
If Mr. Landes stops giving Clash Royale advice to students during classtime, then he could receive a raise.
What should you do if you spill a very strong acid on your hand?
(This is in the Safety Contract, but we will reiterate this when a lab like this comes up)
Run cool water over it for several minutes in the sink or use the chemistry shower.
What is (5.6 * 10^-12) x (-6.8 * 10^15)?
(do not buzz until you have the answer)
-38,080
Convert 27 g/hr to kg/day. (must show work on the whiteboard using the fence method)
0.648
If Mr. Landes was to live in another country besides the US, where would he want to live? (hint: there are 2 possible answers. One is in Europe, the other is in Asia. Double Points if you can name both).
Poland or Japan