Thermochemistry

Thermochemistry - Thermochemistry Kinetic Energy Energy...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Kinetic Energy Energy possessed when in motion KE=1/2mv 2 Potential Energy Energy possessed by virtue when it will move PE=mgh PE in Atom Work is required to pull the negatively charged electron away from the positively charge nucleus called electrostatic potential energy (caused by interactions between charged particles) Strong bonds have lower PE Units of Energy = J (kgm2/s2) 1cal=4.184 J SURROUNDINGS AND SYSTEM System The molecules you want to study Surrounding Everything else in the surrounding area Closed System Can exchange energy but not matter with its surroundings Isolated System Neither energy nor matter can be transferred to its surroundings FACTS 1. energy is neither created nor destroyed 2. if system loses E, the surroundings must gain E 3. Internal Energy=sum of all KE and PE in the system ΔE= E final -E initial Energy gained when E final >E initial (+) Energy lost when E initial >E final (-) TRANSFERRING ENERGY: TROUGHT WORK AND HEAT 1. WORK
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

Thermochemistry - Thermochemistry Kinetic Energy Energy...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online