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First Week of Chapter 1 Notes

by: Zaida Gomez

First Week of Chapter 1 Notes 1341

Marketplace > Texas State University > Chemistry > 1341 > First Week of Chapter 1 Notes
Zaida Gomez
Texas State
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About this Document

These notes are an introduction into matter and measurements. -SI units are labelled -states of matter -properties -prefixes -temperature conversions - density calculations
General Chemistry I
Class Notes
General Chemistry




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This 2 page Class Notes was uploaded by Zaida Gomez on Sunday September 11, 2016. The Class Notes belongs to 1341 at Texas State University taught by Mamiya in Fall 2016. Since its upload, it has received 13 views. For similar materials see General Chemistry I in Chemistry at Texas State University.


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Date Created: 09/11/16
Chapter 1: Intro to Matter and Measurements (week 1) 3 States of Matter Solid- define shape, volume, can’t be compressed Liquid- define volume (shape of container), can’t be compressed, atoms touch, fluidity Gas- no fixed shape/volume, uniformly fills container, can be compressed, far molecules  Density is mass per volume Properties Physical properties- observed without change to the identity or composition of substance Ex. Color, odor, density, melting point, boiling point Chemical properties- Substance will change/react to form another substance Ex. Reaction of substance with water or flammability in presence of oxygen Intensive properties- does not depend on quantity of sample Ex. Melting point, boiling point, density (is EVERYTHING not measured) Extensive properties- depends on the quantity of sample Ex. Mass or volume of sample (measured amount) Physical change- appearance changes but chemical composition doesn’t change Ex. Evaporation, melting Chemical change- substance transforms to a chemically diff substance Ex. Electrolysis of water to form oxygen and hydrogen Physical Properties can be used to separate mixtures Distillation- separate homogeneous mixtures by boiling point Filtration- separate heterogeneous mixtures by solubilities SI Units (system international) Mass- kilogram, kg Length- Meter, m Time- Second, s or sec Temperature- Kelvin, K Amount of substance- Mole, mol  Volume- Liter* Prefixes Kilo- k, 10^3 Milli- m, 10^-3 Micro- u (funny shaped), 10^9 Mega- M, 10^6 Temperature K= degrees Celsius + 273.15 Density Calculations - Derived units is obtained when one or more base units are multiplied or divided - The units have direct correlation to each other - Two commonly derived units with direct correlation are mass and volume - A mass of substance will have an exact amount of volume it will occupy - This derived unit is known as density


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