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Vocabulary
Significant Figures Rules and Why
Calculations
Random
Metric System
Use your Gold Sheet!
100

the difference between the accepted value and the experimental value

What is error?

100

How many sig figs and what rules are in play for the zeros? 2.1000

Zeros at the right end of a number are ONLY significant if....

100

the volume of a room where the height is 25.05 m, the width is 102 m, and the length is 22.3m

What is 5.7 x 104 m3?

100
During a laboratory experiment, the volume of a beaker was determined to be 20.3 mL, the actual number that is a guess is...
What is the 3 (the last digit is always the guess, usually the guess between the lines)
100
0.0703 meters to mmeters
What is 70.3 mmeters
200
the closeness of a measurement to the true value of what is being measured.
What is accuracy
200


0.0021 has how many sig figs and what rule is it?

zeros that precede all the nonzero digits are NOT significant

200
20.5 mg converted to grams is... (use your gold sheet!)
What is 0.0205 grams?
200
9.945 kg-3.5 kg rounded to the appropriate sig fig is...
What is 6.4 kg (the least accurate decimal place is the 1/10th place)
200
8.23 seconds to milliseconds
What is 8230 milliseconds?
300
describes the closeness of a set of measurements taken under the same conditions
What is precision?
300

What is an example of zeros appearing between or "captured" nonzero digits? This number has 5 Sig Figs

40.509 centimeters demonstrates this Sig Fig

300
calculate the volume of a piece of glass that has a density of 2.30 g/mL and a mass of 3.5 grams TO THE PROPER SIG FIGS.
What is 1.5 mL (equation is V=m\D and division sig fig rule says we only can report this to two (2) Sig Figs.
300
(109.0 g)(95g) = (to the proper sig fig)
What is 1.0 x10^4 (you calculator spits out 10355, but we know that two SIG FIGS is where we have to stop. If you used 10000 and no scientific notation, then you'd have to put a bar over the zero in the thousands place)
300
7.678 Kiloliters to Liters
What is 0.007678 L?
400
the mass of an object divided by the volume of the object.
What is density?
400

3.578 has how many sig figs

Four sig figs-Every nonzero number is significant


400
If you have 2.03 mL of gold and the density of gold is 19.3g/cm^3, how many grams of gold is this TO THE PROPER SIG FIGS?
What is 39.2g of gold? (Dont forget if D=M/V...you need to rearrange the equation to D x V = mass)...oh, don't forget that 1 cm3=1 mL too and 3 Sig Figs are reported!!!!
400
The equation used to get volume when given the mass and density of an object is
V=m\D (the density equation manipulated for volume as the unknown)
400
9.745 centimeters to meters is
What is 0.09745 m?
500
a ratio of equivalent measurements used to convert a quantity from one unit to another.
What is a conversion factor?...
500

What is 2100-round to the hundreds place and place zeros in the tens and ones spot as place holders

2050 rounded to two significant figures

2050 rounded to two significant figures

500
Calculate 0.4 x 5.310 x 31 to the proper SIG Fig
What is 70 (your calculator spits out 65.844, but .4 is the Sig Fig limit of those three numbers to 1 SIG fig...so round to 7 in the tens place and put a zero in the ones place as a place holder?
500
90831 expressed in scientific notation to the second Sig Fig is
What is 9.1 x 10^4.
500
189 grams to the mg is
What is 189000 mg?