CHM 2045C- Final Exam Guide - Comprehensive Notes for the exam ( 47 pages long!)
Document Summary
Solid: definite shape + volume, made of particles packed tightly together and rigidly in place. Liquid: definite volume, non-definite shape, particles held close together, but not packed tight. Atoms roll over/around each other: fluid/able to flow, not well understood. Gas: no definite volume or shape, takes shape of its container, made of separated particles due to large distance/speed, fluid, well understood. May/may not be first letters of the name. Pure substances; can be broken down to 2 or more elements by chemical means. Elements combined lose individual identities; na(s) + cl2(g) -> nacl(s) Physical properties: characteristic of matter that can be measured/observed, state, size, mass, color, melting/boiling point, density. Chemical properties: ability to form something new (reaction taking place, flammability, corrosiveness, in order to observe either of the above, there must be a chemical change. Physical change: transformation of matter from one shape/size to another, does (cid:374)ot i(cid:374)volve cha(cid:374)gi(cid:374)g the (cid:373)atter"s ide(cid:374)tit(cid:455, melting, boiling, sublimation.
