1 Intro Matter & Measurement

1 Intro Matter & Measurement - Chapter 1 Introduction:...

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1 Chapter 1 Introduction: Matter and Measurement Classification of matter Definition : Matter is anything that occupies space and has a mass. Matter includes things we can see and touch (paper, pen…), as well as things we can’t see (air…). Three states of matter: Solid: has a definite volume and shape Gas: has no fixed volume or shape Liquid: has a definite volume but no definite shape 2
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2 Properties of Matter P h y s i c a l Properties: Can be observed without changing a substance into another substance. EX: Boiling point, density, mass, volume, etc. C h e m i c a l Properties: Can only be observed when a substance is changed into another substance (flammability, corrosiveness, reactivity with acid, etc. ..) EX: combustion H 2 (g) + O 2 (g) H 2 O(l) 2 2 Properties of Matter (cont) E x t e n s i v e Property: I n t e n s i v e property: Does n o t depends on how much matter is being considered (not additive) Ex: Density 50 20 mL of water at C E X : 10 mL of water at 50 C 10 mL of water at 50 C + Ex: mass Depends on how much matter is being considered 4 Extensive Intensive
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3 Units of Measurement SI Units Système International d’Unités 6 (table 1-4)
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Metric System A system of units of measurement in which the divisions to subunits are made by the power of 10. Table 1-5
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This note was uploaded on 04/18/2008 for the course CHEM 121 taught by Professor Wyzlouzil during the Winter '07 term at Ohio State.

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1 Intro Matter & Measurement - Chapter 1 Introduction:...

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