CHE 110 Lecture Notes - Lecture 1: Kilogram, Hydrogen Peroxide
16 Nov 2016
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Document Summary
C hemistry: the study of matter and its changes. 1. 4 p hysical and c hemical c hanges. Hypothesis: tentative explanation for a set of observations and is testable. Law: c oncise, verbal or mathematical statement of the relationship between phenomena. Theory: unified principle that explains a body of facts and/or set of laws that they are based on & testable. Liquid- has a definite volume but not shape. G as- has neither a definite volume or shape // expands infinitely. Matter: anything that has mass and takes up space. S ubstance: matter that has a definite, constant composition and distinct properties. Element: a substance that cannot be separated into simpler substances by chemical. C ompound: substance composed of 2 or more elements chemically united (bonded) in. C o c arbon monoxide (c ompound) Ex ) c olor, melting point or density identity of the substance. P hysical p roperty: can be measured and obtained without changing the composition or.
