Chemistry 8-30-11 Accuracy & Precision

CHEMISTRY – New – with sound!!

Hey guys, here’s the lecture from Tuesday on accuracy, precision and percent error. Keep that formula for percent error handy, you’ll be using it all year! We’ll finish discussing significant figures tomorrow. You’ve made a great start on learning to measure with sig figs, so now let’s crank it up a notch and begin to calculate with them. Don’t panic about the homework, I’ll show you tomorrow! (Just make sure you try it!!)

flickr photo by – POD –

Hon Chemistry 8-30-11 Significant Figures

HON CHEMISTRY – Wow! Learned some Greek today, huh? Sig figs may seem a little confusing to begin with, but they are extremely important to learn for the rest of the year. Here’s the lecture from Tuesday on using sig figs in measuring and calculations. Do you need some practice? And how are you doing on memorizing the SI prefixes and units? Let’s put it all to good use tomorrow! 🙂

cartoon courtesy of nick d kim,