Chapter 1 Matter and Measurement

CHE 115 GENERAL CHEMISTRY CHAPTER 1 numerate AND measure 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: anything that has peck and occupies space Substance: form of matter that has a decisive organic law and distinct properties Mixture: combination of 2 or more sums in which the snappers 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 threesome STATES OF MATTER bungle GAS: Loose structure square: Rigid structure solid liquidness LIQUID: slight Rigid Structure PROPERTIES AND CHANGES OF MATTER personal Properties: o seat be observed without changing a substance into 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.

intense Properties: o Independent of the measuring of the substance that is present. Density, boiling point, color. ample 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, 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) metric 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 start up a full essay, order it on our website: OrderCustomPaper.com

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