Base Units, Derived Units, and Representing Data
This is the metric base unit of volume.
What is a liter?
OR What are Liters?
Closeness to the "truth" or to a generally accepted value in the scientific community is known as this concept.
What is accuracy?
Give an example of a conversion factor using the equivalence statement 1 kg = 2.2 lb.
What is
(1 kg / 2.2 lb) ?
OR
what is
(2.2 lb / 1 kg) ?
1 kilometer is this many meters.
What is 1,000 meters?
This man came up with an atomic model that resembled two desserts: plum pudding and a chocolate chip cookie.
Who is JJ Thomson?
Water in a liquid has this density.
What is 1 g/mL
OR What is 1 g/cm3?
Give an example of a value that has 4 significant figures; in this case, at least one of the digits has to be 0.
(Answers will vary.)
You have 3.0 grams of a material that has a density of 5.0 g/mL. This is the volume of the material.
What is 0.60 mL?
This is the prefix that lowercase "d" stands for.
What is "deci-"?
This model is not the most up-to-date, but for educational & visual purposes, is still used most frequently.
What is the Bohr model?
OR What is the planetary model?
When one variable increases as the other decreases, we call this a(n) __________ graphing relationship.
What is inverse?
OR What is indirect?
Reproducibility of a process or experiment, as well as how many decimal places are shown on a instrument that gives numerical readings, both indicate this concept.
What is precision?
This is how many minutes are in a typical (365-day) year.
What is 525,600 minutes?
This is the prefix for one billion.
What is "Giga-"?
This is one of the names given to the most up-to-date model of the atom.
What is the Schrodinger model?
OR what is the quantum model?
OR what is the electron-cloud model?
This is the most common type of graph that will be made or used in chemistry.
(No, it's not the Periodic Table, but I see where you're coming from.)
What is a line graph?
Do the math, and put the final answer in scientific notation with the proper amount of significant figures. (2.50 x 104) / (2.0 x 105)
What is 1.3 x 10-1?
(Answer is in three parts: correct answer, in proper scientific notation, and to the right number of sig-figs. Partial credit allowed.)
Convert 32 dL to milliliters.
What is 3,200 mL?
This is the number (or factor) that "milli-" stands for.
What is 0.001?
OR what is one thousandth?
OR what is 1/1000?
OR what is 10-3?
The Rutherford gold foil experiment confirmed that the nucleus of atom is small, ____________, and ___________.
What are positive and massive?
(Partial credit permitted.)
This type of graph or chart is useful for showing parts of a fixed whole, and their parts are usually labeled as percentages.
What is a pie graph?
OR What is a circle chart?
This is the number of significant figures in the following measurement: 07050.000 meters
What is 7 sig-figs?
(7 and 5 are non-zeroes. The zero in between is a sandwich zero. All four zeroes at the end of the number are significant since there is a decimal point shown. Only the 0 in the beginning of the measurement is not significant, since it is just a placeholder; take it away, and you have the same number of sig-figs.)
A patient is prescribed 50.0 mg of medicine every six hours. This is how much medicine the patient will have ingested after 2 full days.
What is 400 mg?
This is the symbol used to abbreviate "micro-."
What is μ ?
OR (if just spoken aloud) What is mu?
These are the two atomic models that do not involve a nucleus.
What are the Dalton Model & the Thomson model?
(Partial credit allowed.)