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Scientific Measurement. All measurements have a number value AND a unit. Remember place values!. Significant figures are all the measurement numbers you can read from the markings on a measuring tool plus one guess.
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Significant figures are all the measurement numbers you can read from the markings on a measuring tool plus one guess.
The more numbers you can write for a measurement, the more precise the tool is.
This ruler shows does not show consecutive markings for the tenths. Our guess digit will be the tenths place.
How many mL of liquid are in the beaker?Hint: Where is the 10mL mark?
This is a graduated cylinder. It is more precise than an Erlenmeyer flask or a beaker.
Water-based solutions will form a meniscus in a graduated cylinder.
To read a volume you must be “eyeball to eyeball” with the meniscus.
A buret is more precise than a beaker or graduated cylinder.
The marks on a buret start with zero at the top. You read how much liquid left the buret.