Chapter 1 Matter and Measurement

CHE 115 GENERAL CHEMISTRY CHAPTER 1 numerate AND quantity CONTENTS INTRODUCTION 2) PROPERTIES AND CHANGES OF MATTER 3) SIGNIFICANT FIGURES 4) ACCURACY VERSUS clearcutness 1) INTRODUCTION Chemistry is the study of matter and the changes it undergoes. a. b. c. i. ii. event: any(prenominal)thing that has caboodle and occupies space Substance: form of matter that has a distinct reputation and distinct properties Mixture: combination of 2 or more sums in which the perfumes retain their distinct identities akin: composition same throughout Heterogeneous : composition non uniform d. e. atom: made of the same kind of atom; canonical substance that can not be broken by any physical and chemical means to simpler substances Compound: containing dickens or more elements CLASSIFICATION OF MATTER The Study of Chemistry THE third STATES OF MATTER bungle GAS: Loose structure unshakable: Rigid structure solid liquidness LIQUID: less(pr enominal) Rigid Structure PROPERTIES AND CHANGES OF MATTER personal Properties: o so-and-so be observed without changing a substance into some other substance. boiling point, density, mass, volume. Chemical Properties: o Can only be observed when a substance is changed into another substance. Flammability, corrosiveness, reactivity with acid.

intensifier Properties: o Independent of the measuring of the substance that is present. Density, boiling point, color. wide Properties: o Dependent upon the amount of the substance present. Mass, volume, energy. CHANGES OF MATTER Ph ysical Changes: ? does not alter the com! position or identicalness of a substance. Changes of state, temperature, volume, etcetera Chemical Changes: ? alters the composition or identity of the substance(s) involved. Combustion, oxidation, decomposition, etc. UNITS OF MEASUREMENT SI UNIT International System of Units (SI)  metrical SYSTEM VOLUME: 1 cm3 = (1 x 10-2 m)3 = 1 x 10-6 m3 1 dm3 = (1 x 10-1 m)3 = 1 x 10-3 m3 1...If you want to thwart a full essay, order it on our website: OrderCustomPaper.com

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