chem stry contestants must have paper and pencil with them to give questions to the final jeopardy...
TRANSCRIPT
Contestants must have paper and pencil with them
to give questions to the Final Jeopardy answer.
Contestants may want to have a calculator with them
as an aid in providing questions to some answers.
Significant Digits
Chemical Measure
Inquiry Process
Organize & Interpret
Evaluating Inquiry
Tech
Talk
$200 $200 $200 $200 $200 $200
$400 $400 $400 $400 $400 $400
$600 $600 $600 $600 $600 $600
$800 $800 $800 $800 $800 $800
$1000 $1000 $1000 $1000 $1000 $1000
Significant or Not
Measuring Devices
Scientific Notation
Dimensional Analysis
Observations Inferences
$400 $400 $400 $400 $400 $400
$800 $800 $800 $800 $800 $800
$1200 $1200 $1200 $1200 $1200 $1200
$1600 $1600 $1600 $1600 $1600 $1600
$2000 $2000 $2000 $2000 $2000 $2000
Final Jeopardy
What is NEVER?(You never bring snacks into the lab area.)
This is the only time that you are allowed to bring snacks
into the lab area.
$200
What are digital measuring devices?
These measuring devices typically show numbers on a
screen.
$400
What are analogue measuring devices?
With these students have to figure out where the
measurement should be.
$600
What are uncertain digits?
This is the digit that students estimate or the last digit in
any measured number.
$800
What are significant digits?
These are BOTH the digits in a measurement of which
students can be certain AND the digits that are uncertain.
$1000
What are significant zeroes?
There is a one-part rule and a two-part rule for determining
these.
$200
What is a measurement unit?
Even if you have all the certain and estimated digits right, measurements are not
complete without these.
$400
What is an analogue measuring device?
This is the kind of device with which you must
ALWAYS estimate the last digit.
$600
What is “more precise?”
When a measuring device can be used to determine more
digits than another measurement device, it is
said to be this.
$800What is the 10ths place?
A measured number that has been recorded to the 100ths
place is assumed to have been measured on an analogue
device that has markings to this increment.
$1000
What is precise but not accurate?
Repeated measurements that are close to each other but NOT close to the actual
measurement are this but NOT that.
$200
What is “the dependent variable?”
This is the variable that changes in response to
changes in the independent variable.
This is an attempt to explain why observed behavior occurs by attempting to explain what underlying phenomena caused
the behavior.
$400
What is a “scientific model?”
$600
What is “tentative?”
All explanations in science must be based on physical evidence, sound reasoning, and they are always this.
$800
What is a “cause and effect” (or “if/then”) relationship?
Scientific investigations are designed to answer a question
about this relationship between 2 variables.
$1000What is a “controlled scientific
investigation.”
This is the kind of scientific investigation in which “…one
variable at a time is deliberately changed and the effect on another
variable is observed while holding all other variables constant…”
$200
What is a table?
Charts are OK for organizing data in a lab notebook, but THESE are required for a
formal write‑up.
$600
What are a description of the variable and the unit of measurement?
In addition to the numbers and incremental markings, a
graph is not complete without these 2 things on each axis.
$800
What is a straight line with an upward (or positive) slope?
Variables in which the measured data are in direct proportion will create this
kind of graph.
$1000
This is the formula implied by a “best fit” line on a graph that is a straight line with an
upward slope starting at zero.
F
ak
What is independent variable over dependent variable equal a constant?
xk
y
$200
What is an “if-then” or “cause and effect” statement?
This is the form in which an hypothesis should typically
be written.
$600
What are tables, charts, and graphs?
These are tools used by scientists for reviewing the
data they have gathered.
$800
What is the “hypothesis is supported?”
This is what happens when the data in an experiment is consistent with a prediction.
$1000
What is a model that describes what the scientist believes is the cause of the
phenomenon to be tested?
Hypotheses should be based on this.
$200
What are technological designs or products?
These are the applications of scientific knowledge to meet
specific needs of humans.
$400
What are engineering and technology?
Unlike science, these areas of endeavor are primarily
interested in making things work.
$600
What is science?
This endeavor is interested in developing defendable
arguments to explain how and why the universe works as it
does.
$800
What is a technological challenge?
Science must sometimes overcome this to further its goal of explaining how the
universe works.
$1000
What is when the risks exceed the benefits?
This is when scientists must choose NOT to overcome a technological challenge in
order to pursue an experiment.
$800
What is, it’s between 2 significant digits?
This is the reason why the underlined zero in the following number is significant: 20.01.
$1200
What is it follows both a non-zero digit AND a decimal place?
This is the reason why the underlined zero is significant:
20.0.
$2000
What are 3 significant digits?
The number of digits needed in the final answer of this
problem:2 2
2
1 mol CrCl 122.9015 g CrCl1.50 g KOH 1 mol KOH
1 56.1056 g KOH 2 mol KOH 1 mol CrCl
$400
What is a digital measuring device?
The kind of measuring device that might have a screen that
displays a number such as this: . 122.45 g
$800
What are 5 significant digits?
The number of significant digits if a number such as this
were to displayed on a measuring device screen:
120.40 g
$1200
What is there are no insignificant digits?
The insignificant digits if this number were to be displayed on the screen of a measuring
device: . 122.45 g
$1600
What is 39.3 mL?Or any amount between 39.2 to 39.4 mL, but the measurement MUST be precise to the 10ths place.
This is the amount of liquid in the graduated
cylinder illustrated here.
40 mL
30 mL
This is the amount of liquid dispensed from the buret
illustrated here.
$2000
What is 1.26 mL?Or any amount between 1.23 to 1.29 mL but the measurement MUST be precise to
the 100ths place.
32 mL
33 mL
32 mL
33 mL
Initial Measurement
Final Measurement
$800
What is 1.253 103 g of iron?
This is how 1253 grams of iron would be written in
scientific notation.
$1600
What is 0.000 993 mL H2O?
This is how 9.93 104 mL H2O
would appear when it is NOT in scientific notation.
$400What is 18.0153 grams of water is equal to
1 mole of water?- or -
What is18.0153 g H2O = 1 mol H2O?
This is the equality statement from which the conversion
unit is constructed.2
2
18.0153 g H O
1 mol H O
$800
What is counting numbers are NOT used in determining significant digits final answer?
This is how counting numbers are used in dimensional analysis when determining the number of
significant digits in a final answer.
$1200
What is to put the starting amount over one in a fraction?
This what you do with the starting amount in most
conversion problems in Mr. Tedder’s class.
$1600
What is temperature?
Degrees Celsius, degrees Fahrenheit , and Kelvin units are all part of this dimension.
If there are 2 or more calculated or measured numbers being
multiplied or divided, you should choose this to determine the number of digits in the final
answer.
$2000What is the number with the fewest digits?
$800
What are “units of measurement?”
Numbers from measurements by themselves tell you nothing without these.
$1200
What is mass?
Because the pull of gravity is greater at Myrtle Beach than it is in Spartanburg, chemists
don’t use weight, they use this.
$1600
What is volume?
This is a dimension of measurement AND the
amount of space taken up by an object.
This is an intensive property and it’s the ratio of mass to
volume of a substance at a given temperature and pressure.
$2000
What is “density?”
$400
What is “an inference?”
Drawing a conclusion, offering an explanation, or deciding that a chemical
reaction occurred.
Color and color change, temperature and temperature
change, smell, and measurements that you make
are all examples of this.
$800
What is “an observation?”
$1200
What is a chemical reaction has occurred?
This is an inference that could be made if gas is
produced when two solutions are mixed together.
In the 18th century Antionne Lavoisier experimented with
oxides such as CO2 and SO2. He observed that they formed acidic
solutions in water. He concluded that acids contain oxygen.
$1600
What is an “inference?”
This is what we call the category of information that
includes Lavoisier’s conclusion.
$2000
What are inferences?
This is how we can predict the behavior of atoms even
though they cannot be directly observed.
Daily Double
This is what an direct proportion looks like.
What is a graph that follows a straight line with a positive slope or a math problem in
the form ? xk
y
Daily Double
This is what an indirect proportion looks like.
What is a graph that follows a curve from near the top of the y axis down and then
curving to the right to follow the x axis or a math problem in the form: x y = k ?
Daily Double
What is crossing out the units and species?
This is what is missing from this dimensional analysis
calculation:2 2
2 22
5.25 g H O 1.00 mL H O5.35714 mL H O 5.4 mL H O
1 0.98 g H O