Search found 29 matches
Search found 29 matches • Page 1 of 1
- Thu Jun 14, 2018 1:14 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 7951
- Views: 1214004
A chemistry professor couldn't resist interjecting a little philosophy into a class lecture. He interrupted his discussion on balancing chemical equations, saying, "Remember, if you're not part of the solution, you're part of the precipitate."
- Sun Apr 15, 2018 9:34 pm
- Forum: Significant Figures
- Topic: Why are sig figs important?
- Replies: 13
- Views: 2508
Sig figs tell us where to round in the context of the problem. For example, if larger units with less sig figs are used, then the overall calculation would reflect this and in areas where small, precise measurements are used, it tells us where to cut off so instead of worrying about every digit we k...
- Sun Apr 15, 2018 9:26 pm
- Forum: Properties of Electrons
- Topic: History of experiments on the model of atom
- Replies: 7
- Views: 420
I'm pretty sure this class is more based on concepts and calculation instead of history so you're probably good.
As a constant, the number really doesn't have a specific reason for being what it is except for the fact it links the other two variables and was probably determined through experimentation. It is similar to how the speed of light is 3x10^8. Similarly, using this variable it is possible to get one o...
- Sun Apr 15, 2018 9:06 pm
- Forum: Balancing Chemical Reactions
- Topic: Balancing the Equation
- Replies: 9
- Views: 557
What I like to do is write out the total number of each atom before balancing on each side, then see how the number of atoms changes with different coefficients. If I right down enough of these usually the answer is apparent.