Terms
numbers...
curious
Significant
work it
100
a measure of how close a series of measurements are to one another.
What is Precision
100
What is the equation to calculate percent error?
100
why do we use scientific notation in chemistry?
Numbers are easier to work with.
100
How many significant numbers does 10200 have?
3
100
Multiply 5.04 X 1012 by 6.9 X 10-6
(5.04 x 6.9) x 10(12+-6)
34.776 x 106 OR 3.5 x 107
200
The closeness of a measurement to its true value is a measure of its_________
What is accuracy
200
write 5703000000 in scientific notation
5.703 x 109
200
What is the value that is measured in the lab?
experimental value
200
How many significant numbers does 0.000006022 have?
4
200
complete the following math problem with correct sig. figs. and labels
34m +45.32m
79 m
300
Conversion factors are useful in solving problems in which a given measurement must be expressed.
What is dome other unit of measure
300
Write 56000000 in scientific notation
5.6 x 107
300
If the temperature of a piece of steel decreases, what happens to its density?
The density increases
300
How many significant numbers does 2000000502 have?
10
300
89.033m - 56.43 m=
32.60m
400
A ____ is a quantity that has both a number and a unit.
What is a measurement.
400
Write 0.0000750 in scientific notation
7.50 x 10-5
400
If the temperature changes by 100 K how much does it change in Co?
100o C
400
Round 200.5 km to 1 significant figure.
200 km
400
45.22 m x 9.3 m=
420 m2
500
Correct value based on reliable references.
What is Accepted value
500
Write 0.000000000384 in scientific notation
3.84 x 10-10
500
Which of these measurements are expressed to three significant figures?
.007 m or 7.3 X 10-7 km
7.3 x 10-7 km
500
Round 0.00071467 kg to two significant figures
0.00071 kg
500
209m x 4.444m=
929m2