CHEM STRY

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

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$800 $800 $800 $800 $800 $800

$1000 $1000 $1000 $1000 $1000 $1000

Significant or Not

Measuring Devices

Scientific Notation

Dimensional Analysis

Observations Inferences

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$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

Safety

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.

$400

What is the y or vertical axis?

Graphs should have dependent variable data

recorded here.

$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.

$400

What is a scientific theory?

This is what is used by scientists to explain why

things happen.

$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.

$400

What are non-zero digits?

In measurements, these digits are always significant.

$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.

$1600

What is 5?

This is the number of significant digits in this

measurement:

0.0042010 g Fe

$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

$400

What is 1.25100 mL?

This is how 1.25 mL would be written in scientific

notation.

$800

What is 1.253 103 g of iron?

This is how 1253 grams of iron would be written in

scientific notation.

$1200

What are 4 significant digits?

The number of significant digits in 1.257 104 C.

$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.

$2000

What is 1.0 101 or 0.1?

This is the product when1.0 104

is multiplied by 1.0 103.

$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?

$400

What is “quantitative?”

Measurements are this kind of observation.

$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

The Jeopardy champion!