Measurement and Dimensional Analysis Quiz Flashcards
how many sig. figs. are in the number 0.02?
1
how many sig. figs. are in the number 0.020?
2
How many feet are equal to 54.7 inches?
4.56 ft
How many grams (g), liters (L), and meters (m) are in Megagrams (Mg), Megaliters (ML), and Megameters (Mm)?
1Mg = 1,000,000g
1ML = 1,000,000L
1Mm = 1,000,000m
What is the symbol and meaning for the prefix Deci?
Symbol: d
Meaning: tenth (0.1)
What is the symbol and meaning for the prefix Milli?
Symbol: m
Meaning: thousandth
how many sig. figs. are in the number 20,020?
4
how many sig. figs. are in the number 20,000?
1
how many sig. figs. are in the number 2.0x10^-3?
2
how many sig. figs. are in the number 2,002?
4
What is the rule for Addition and Subtraction when solving an equation with sig. figs.?
the answer is rounded to the same # of decimal places as the # with the least decimal places in the equation.
Ex #1: 7.12 - 1.345 = 5.775 = 5.78
(7.12 has the least number of decimal places in the equation so we would round our answer 5.775 to have the same amt of decimal places. This would make the answer 5.78, which is also rounded to the nearest hundredth, DONT FORGET TO ROUND)
Ex #2: 5.7 + 2.11 = 7.81 = 7.8
What is Dimensional Analysis?
A method used to convert units
Answer the equation with the correct amt of sig. figs.
4.55 + 3.45 = ?
8.00
What is the symbol and meaning for the prefix Kilo?
Symbol: K
Meaning: thousand
How many ounces are in a pound?
16 ounces
What is the rule for Multiplication and Division when solving an equation with sig. figs.?
the answer is rounded to the same # of sig. figs. as the # used in the calculation with the least sig. figs.
Ex #1: 17.85/2.13 = 8.38028 = 8.38
(You divide the 2 #’s and get that long number but since 2.13 is the # with the least sig. figs. you round your answer to get the same amt of sig. figs., which is 3, this will lead you to get the answer 8.38)
Ex #2: 0.0561 x 0.030 = 0.001683 = 0.0017 (rounded)
How many Kg is equal to 45,000 mg?
0.045 kg
How many mins are in an hour?
60 mins.