01:160:161 Study Guide - Final Guide: Effective Nuclear Charge, Atomic Orbital, Electronic Density
Document Summary
Matter: anything that has mass and occupies space. Physical properties: can be observed and/or measured w/o changing the composition of the substance. Intensive properties: scale invariant (independent of size/amt. of material) Ex: properties used to identify matter, t, density molecular weight, color, odor, melting pt, freezing pt, boiling pt, electrical resistivity, thermal conductivity, ductility, malleability, hardness, brittleness. The ratio of two extensive properties gives an intensive property (ex: density) Extensive properties: directly proportional to the scale (proportionally dependent on size/amt. of material) Hypothesis: idea that is provided as explanation; testable. Theory: successful hypothesis; unifying principle that explains a body of facts and the laws based on them; usually suggests new hypotheses and experiments; may have to be modified or discarded (like a law) Law: statement that summarizes and explains wide range of experimental results and has not been contradicted by experiments; can predict unknown results and also can be disproved or falsified by new experiments.
