Chapter 1 Matter and Measurement

CHE 115 GENERAL CHEMISTRY CHAPTER 1 numerate AND measuring 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: some(prenominal)thing that has skunk and occupies space Substance: form of matter that has a clear radical and distinct properties Mixture: combination of 2 or more sums in which the significances retain their distinct identities akin: composition same throughout Heterogeneous : composition non uniform d. e. member: 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 iii STATES OF MATTER bungle GAS: Loose structure full-blooded: Rigid structure solid liquidness LIQUID: slight Rigid Structure PROPERTIES AND CHANGES OF MATTER personal Properties: o flock be observed without changing a substance into another(prenominal) 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.

intensive Properties: o Independent of the measuring of the substance that is present. Density, boiling point, color. great Properties: o Dependent upon the amount of the substance present. Mass, volume, energy. CHANGES OF MATTER Physical C hanges: ? does not alter the composition! 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)  deliberate 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 do a full essay, order it on our website: BestEssayCheap.com

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