Measurement+&+the+Scientific+Method

__**Directions:**__ a) list and define all vocabulary from the chapter

Accuracy- how close a measurement is to the excepted value for a quantity. Precision- the agreement of several measurements that have been made in the same way. Sig figs- non zero digits are always significant, zeros between non-zero numbers are significant, zeros at the beginning of a number are never significant, zeros after a number and after a decimal point are significant, zeros perceding and imaginery decimal and following a number are not significant. addition/subtracting/multiplying/dividing using sig figs- Final answer can be only as precise as the number that is least precise b) type at least 4 sample problems with step-by-step directions of how to solve the problem; list the correct answers (if your chapter doesn't have math, there are still problems and concepts we learned.) How many meters are in a Km? 1000 m in 1 Km

How many eggs in a dozen? 12 eggs

How many sig figs are there in 0.005420? 4 sig figs

2.445 + 2.3 = 4.745 = 4.7

2.565 * 8.30 = 21.2895 = 21.3 c) link at least 3 websites for additional resources to help with studying http://www.chem.sc.edu/faculty/morgan/resources/sigfigs/index.html

http://interactagram.com/physics/PrecisionAndAccuracy/

http://www.sciencegeek.net/APchemistry/APtaters/chap02counting.htm d) develop your own LEQ questions for the section - what did you think were the key points we learned? How does using sig figs make your measurements more accurate? e) Once your page is done, visit 4 other chapters and answer their LEQ's. (This can be done on a separate piece of paper.)