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week 1 and week 2- Matters and Mesurements

by: vanda Depina

week 1 and week 2- Matters and Mesurements chm 161

Marketplace > University of Massachusetts > Chemistry > chm 161 > week 1 and week 2 Matters and Mesurements
vanda Depina
GPA 3.3
intro applied chemistry I
zhiwei lui

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About this Document

Hi guys, these notes are for week 1 and week 2 of class. I hope you enjoy. Thanks
intro applied chemistry I
zhiwei lui
75 ?




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This 3 page Bundle was uploaded by vanda Depina on Friday February 6, 2015. The Bundle belongs to chm 161 at University of Massachusetts taught by zhiwei lui in Spring2015. Since its upload, it has received 71 views. For similar materials see intro applied chemistry I in Chemistry at University of Massachusetts.


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Date Created: 02/06/15
CHM 151 012915 Chapter 1 is the study of matter and the changes it undergoes the energy associated with those changes anything that occupies space and that has mass What kind of change does a matter undergo Matters are also physical chemical Anything that occupies space is mass Atoms extremely small particles Molecules combination of 2 or more atoms lons charged atoms or molecules If two atoms are colored the same then they are called homoatonic molecule If they are different colors then they are called holefoatomic molecules If the ions carry quotquot they are called Cations If the ions carry quotquotthey are called anions Elements one unique kind of atoms can exits either in atoms or in molecules but if in molecules they must be homoatonic molecules 0 Compounds two or more different types of elements chemically bound together which are hoteroatomic molecules Mixture two or more substances physically intermingled Heterogeneous mixture are not uniform visible boundaries between compounds Homogeneous mixture uniform no visible boundaries between compounds Matter pure substance elements compounds Mixture Homogeneous mixture heterogeneous mixture Atoms of an elements Molecules of an elements are called diatonic molecules 020515 CHM 151 Properties a characteristics that gives a substance its unique identity Physical states of matters Solid xed shape xed volume at a certain temperature Liquid l Density mass in unit volume Mass weightvolume Physical change you will notice the physical change in size state phase Chemical change chemical reactions will notice chemical color change gas formation precipitator out insoluble Measurement in science In measurements we need to record numbers and units at the same time Length meter Max kilogram Time second Temperature Volume Liter L lL 1000 ml Milliliter ML 0001 L 103 L


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