Group+3+Jamie+and+Marty

Significant figures is the measurement used in experiments. It is used to measure the precision of the instruments, the farther the decimal place the closer the number is to zero. For example, if the answer is 1.0008 that number is alot closer to 0 than 1.98 is.

In part B. we used a beaker, a 25mL graduated cylinder, and a 100mL graduated cylinder to measure the accuracy of each instrument. For each instrument we used there was a different measurement. Like in our first trial we measured 19.0mL in the 25mL graduated cylinder but in the 100mL cylinder we calculated 19.5mL. and each trial the measurements were off ranging from .1-.75. To find our percent error we had to take 1 trial measurement and subtract the accepted value divided by the accepted value then multiply that by 100%. as our result we got 2.3%. But the closer to zero the more accurate it is and 2.3%. Our experiment turned out to be fairly accurate because we were pretty close to zero but next time we would try to get it down a little bit.

Jamie Davidson and Marty Rodgers