Show:
SI Units
Accuracy & Precision
Significant Figures
Scientific Notation
???
100
SI stands for...
International System of Units
100
Is this data accurate or precise if the accepted value for the density of copper is 8.96 g/mL? Assume all values are in g/mL. 4.5, 4.4, 4.2, 4.4.
Precise, but not accurate.
100
How many sig figs does this number contain? 245
Three
100
Put 12500 in proper scientific notation.
1.25 x 10^4
100
Room temperature is considered to be 25 degrees celsius. What is this in kelvins?
298 K
200
How many centimeters are in a meter?
100
200
A measurement can be both _______ and ________, but it can never be __________ and _______________.
Accurate, Precise, Accurate, Imprecise
200
How many significant figures are in: 1.00670g
Six
200
Expand 1.540 x 10^3
1540.
200
What is the difference between the experimental value and the accepted value?
What is accepted value is the correct value based on reliable references and the experimental value is the value that is measured in the lab.
300
How many milliliters are in a cubic centimeter?
1
300
This quantitatively measures accuracy
What is percent error
300
How many sig figs does the number 1400 contain?
four
300
Put (234.50 x 10^6) in proper scientific notation.
2.3450 x 10^8
300
Why do we use significant figures?
To determine how accurate and/or precise a number can be.
400
How many cubic millimeters are in a cubic centimeter?
1000
400
This quantitatively measures precision?
Range
400
How many sig figs are in the number 0.0056?
two
400
Perform the following calculation with the correct number of significant figures. (4.0 x 10^-40) / (2.00 x 10^-10)
2.0 x 10^-30
400
How many liters are in a cubic decimeter?
1
500
How many cubic millimeters are in a milliliter
1000
500
How accurate and precise is the data below if the accepted value for the density of an unknown substance is 4 g/mL? 4, 5, 6, 7, 8
50% accurate 4 (range) for precision
500
What is the product of 40.0 x 2.0 with the correct number of significant figures?
80. or 8.0 x 10^1
500
What is the answer to the following problem? (With correct significant figures) (1.00 x 10^-25) + (2.0 x 10^-26)
1.2 x 10^-25
500
How many microliters of ethanol are in 1.60 mL of ethanol?
1.60 x 10^3 microliters