Scientific Notation
What is 42.39 in scientific notation?
4.239 × 101
How may grams are in a decagram?
10 g
What is the fundamental SI unit for mass?
kilogram
How many sig figs are in 34,343,000,000 mm?
5
What is the definition of accuracy?
how close a measurement is to the true listed value
accuracy "actual" value
What is 9.728 × 102 in decimal notation?
972.8
How many nanograms are in a gram?
1x109
What is the fundamental SI unit for time?
second
How many sig figs are in 0.00037563 mm
5
What is the definition of precision?
proximity of several measurements
precise "proximity"
What is 7.5649 × 105 in decimal notation?
756490
3.5 kilograms contain this many grams
3500 g
What is the fundamental SI unit for length?
meter
What is 66.7 kg − 7.300 kg with correct sig figs?
59.4
Give an explanation of accuracy and precision in terms of a dart board
accuracy- hit the bullseye
precision- keep hitting the same spot, but not the bullseye
What is 0.00063 in scientific notation?
6.3 × 10-4
Convert 802 m to mm
802,000 mm
What is the fundamental SI unit for the amount of a substance?
mole
What is 90,000 ÷ 0.025000 with correct sig figs?
Give decimal and scientific notation
4,000,000 or 4 × 106
Michael's scale measures the mass of objects as consistently 2 kg less than their actual mass. How would you describe the scale in terms of accuracy and precision?
precise, but not accurate
What is 0.0033 in scientific notation?
3.3 × 10-3
Convert 41.2 L to hL
0.412 hL
What is the fundamental SI unit for temperature?
kelvin
What is 53,000 × 0.614 with correct sig figs?
Give decimal and scientific notation
33,000 or 3.3 × 104
A set of measurements yields 9.95, 10.05, and 10.00. The actual value is 10.00. How would you describe these measurements in terms of accuracy and precision?
both accurate and precise