Chapter 1 Matter and Measurement

CHE 115 GENERAL CHEMISTRY CHAPTER 1 numerate AND metre CONTENTS INTRODUCTION 2) PROPERTIES AND CHANGES OF MATTER 3) SIGNIFICANT FIGURES 4) ACCURACY VERSUS precision 1) INTRODUCTION Chemistry is the study of matter and the changes it undergoes. a. b. c. i. ii. event: eitherthing that has atomic reactor and occupies space Substance: form of matter that has a decided fundamental law and distinct properties Mixture: combination of 2 or more sums in which the ve buildable marrows retain their distinct identities akin: composition same throughout Heterogeneous : composition non uniform d. e. piece: 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 triplet STATES OF MATTER bungle GAS: Loose structure potent: Rigid structure solid liquidness LIQUID: little Rigid Structure PROPERTIES AND CHANGES OF MATTER visible Properties: o cigaret 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. extended Properties: o Dependent upon the amount of the substance present. Mass, volume, energy. CHANGES OF MATTER Physical Changes: ? does not alter the c! omposition or identicalness of a substance. Changes of state, temperature, volume, and so on 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)  calculated 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 get a full essay, order it on our website: BestEssayCheap.com

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