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Introduction to Measurement Lab- Conclusion
=== ﻿ ﻿ ﻿ Significant figures are important to use during experiments to assure the truth of each number. When using graduated cylinders or graduated beakers, the measurement spaces provided may be widely space, allowing the substance to fall short of a line. When this occurs, you should add on a significant figure. For example, during our experiment, some beakers provided measurement lines that count by ten or five. The water it contained usually fell somewhere in between the given lines. Therefore, we have to estimate what number the water might have landed on if more lines were provided. If we were to measure a liquid that was close to 25 mL, we should estimate that the measurement is 25.250 mL, because it is past the 25 mL line, but does not quite reach the halfway mark to the 26 mL line. A more accurate answer is provided when you add on the .250 mL, rather than rounding and saying that it measured 25 mL. It is extremely important to add significant figures, so that if someone else were to do the experiment again, and realized that the liquid measurement fell short of a line, they might wonder why you said the measurement was much higher or lower than reality, and question themselves. When using chemicals that react to different substances, it is important to measure it correctly, and as closely as possible. It the experiment requires an exact measurement with significant figures, such as 15.750, you must be able to estimate beyond the lines of the graduated beaker or cylinder, to assure you get the right reaction or result. ===