Sam_2207
IiTeachChem
•Created by Sam_2207 on 11/28/2024 in #💭│doubts
Significant figures
Please tell me if I'm understanding all this correctly -
• the significant figures in a given reading are all going to be consecutive digits, and of those consecutive significant digits, the last one is the one we're uncertain of, while we're certain of the rest.
• When we're writing down a reading made using a generic ruler, with its smallest unit being 1 millimeter, the reading cannot be something like 2.33 cm, it can only be 2.3 cm, even if we feel like the former reading is closer to the real value, judging by eyeing the gap between the 23 mm and 24 mm lines on the ruler.
• If we can see that the reading is equal to or greater than 2.35 cm, do we write down 2.4 cm or 2.3 cm?
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