Chemistry - Chapter 3

accuracy

how close a single measurement comes to the actual value is being measured

dimensional analysis

a way to analyze and solve problems, using the units of a measurement

meter

the SI basic unit of length

1 kilogram

the mass of 1 L of water at 4 degrees celsius

conversion factor

a ratio of equivalent measures

precision

how close several measurements are to each other

weight

a measure of the pull of a given Mass of an object to its volume

density

the ratio of the mass of an object to its volume

1 Liter

the volume of a cube 10 cm on each edge

temperature

the degree of hotness or coldness of an object

how is the number of seconds in a 40-hour work week be calculated

what is the scientific notation for 0.0000062

8.62×10^-6

what is 4.06×10^-5 g

0.0000406 g

according to the rules of significant figures, what is the number of digits that are estimated in a measurement

one

how many significant figures are in the measurement 603.040g

6

how many of the zeros in the measurement 0.050060 are significant

3

what is the thickness of a dime approximately

1mm

how many centimeters are in 25 kilometers

2.5×10⁶cm

what does the metric prefix milli- mean

1000 times smaller

conversion factor

equal to 1, is a ratio of equivalent measurements, does not change the value of a measurement