Chemistry

# Chemistry - system Temperature Scales ° F ° C K T F = T...

This preview shows page 1. Sign up to view the full content.

Chemistry 9/13/07 1.5 Energy: A fundamental part of physical and chemical chance Energy is the capacity to do work Work = force x distance Total energy = potential energy(position, composition) + kinetic energy(motion) + thermal energy (heat, temperature, kind of kinetic energy) Law of conservation of energy Energy is neither created nor destroyed 1.6 Units of Measurement Measurement Quantitative observation consisting of two parts… 1) Number 2) Scale (unit) standard Quantity = number x unit SI Units (system international) Based on the metric system and on units derived from the metric system
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: system Temperature Scales ° F ° C K T F = T c * (180 ° F/100 ° C) + 32 ° F ° C = 273.15 K = 32 ° F T K = T C + 273.15 K Prefixes Use prefixes to express smaller and larger units Kilo- (k) = 1,000 Centi- (c) = 1/100 Milli- (m) = 1/1000 Micro- ( μ ) = 10-6 Nano- (n) = 10-9 Density = mass/volume Units – kg/m 3 or g/mL (also g/cm 3 ) D water = 1 g / mL 1.7 Reliability (and Uncertainty) in Measurements Measurements always have some degree of uncertainty (“error”) Significant digits = the certain digits and the 1 st uncertain (rounded/estimated) digit...
View Full Document

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern