01:119:101 Lecture Notes - Lecture 2: Colloid, Aqueous Solution, Surface Tension

• School: Rutgers University
• Department: Biological Science
• Course: 01:119:101
• Professor: Professor Beal

Document Summary

Inquiry = search for natural causes to natural phenomena. Hypothesis = testable explanation for observations based on available data. Law = statement of what always occurs under certain circumstances: the scientific process. 25 out of 92 elements are essential to life: 4 make up 96% of living matter (chon) Nitrogen (3. 3%: the other 4% is calcium, sulfur, phosphorus, potassium, properties of atoms depend on structure, each element consists of unique atoms, atoms are composed of 3 subatomic particles: b. i. Electrons = form negative cloud and determines chemical behavior. Atomic number = number of protons and electrons in atom. Atomic mass = number of protons and neutrons. Valence shell = outermost shell, where bonds between electrons form. Isotopes = 2 atoms of an element that differ in the number of neutrons. Sharing a pair of valence electrons by 2 atoms a. ii. Strongest bond out of all the types of bonds a. iii. Polar = the electrons are shared unequally a. iii. 2. a.