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Measurements
Chemistry CH2 Measurements
| Term | Answer |
|---|---|
| Mega | (M) 1,000,000 10 to the 6th |
| Kilo | (K) 1,000 10³ |
| Deci | (d) 0.1 10ˉ¹ |
| Centi | (c) 0.01 10ˉ² |
| Milli | (m) 0.001 10ˉ³ |
| Micro | (μ) 0.000 001 10ˉ6 |
| Nano | (n) 0.000 000 001 10ˉ9 |
| Peco | (p) 0.000 000 000 001 10ˉ¹² |
| 1 km | 1000 m |
| 1 m | 100 cm |
| 1 cm | 10 mm |
| 1 Kg | 1000 g |
| 1 g | 1000 mg |
| 1 L | 1000 ml |
| Sig. Figs. Rule #1 | digits other than 0 are ALWAYS significant |
| Sig. Figs. Rule #2 | any trailing zero after a decimal point is significant |
| Sig. Figs. Rule #3 | zeros between two significant figures are always significant |
| Sig. Figs. Rule #4 | zeros to the left of a nonzero digit, but to the right of an understood decimal point are not sinificant |
| Sig. Figs. Rule #4 (however) | if the zeros are known to have been measured, they are significant. To specify these a decimal pt. is inserted to the right of the zero. |
| Sig. Figs. Rule #5 | zeros used solely for placing a decimal point are not significant |
| Rule for multiplying/dividing numbers | answer will have the same number of significant figures as the figure with the least # of significant figures |
| rule when adding/subtracting numbers | answer will have the samne number of places after the decimal as the figure with the least number of places after the decimal |
| Kinetic Energy | energy of potion |
| Potential Energy | stored energy; has the capacity to do work |
| 1 cal | 4.184 joules |
| Specific gravity | density of a substance (g/mL) over density of water at the same temp (g/mL) |
Created by:
hugheslm
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