Class notes
Class notes CHEM 101
- Course
- CHEM 101 (CHEM101)
- Institution
- Colgate University
Notes from General Chemistry 1 covering elements, atoms, molecules, states of matter, mixtures, solutions, and compounds.
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gWI Wednesday Lecture protonsneutronselectrons
Chemical Substances subatomic
Atomsmallestunit that still retains chemicalidentitymadeup of particles particles
Molecule made
up of two or moreatomsjoinedtogether nolimitonhowlarge
Elementsubstancethatcannotbebrokendownintosimplesubstances madeof
onlythesamekindofatoms
Compound substance thatcan bebrokendowninto 2 or moreelementsmade of molecules containingdifferentatom
Mixtures componentsubstancesexisttogether withoutcombiningchemically can be separated
Homogenous uniformthroughout
Heterogenous not uniform throughout
Solution
. Homogenousmixture of 2 or more components oftensolid in liquid
Solute solidthat isdissolved
solvent liquid in which solid is dissolved
States of Matter
solid fixedvolume shape particlesheld together in rigid welldefined lattice
denoted s
Liquid fixedvolume conformsto shapeofcontainer particlesheldtogether butnotfixed can move
denoted 11
Gas notfixedvolume or shape fillsentirev01 ofcontainer conforms toshape particlesmovefreelylotsofemptyspa
denoted g
Elements
Elementnamesandsymbols
Atomic number
Elementalsymbol
Elementname
Atomic weight
Yetals vs Non Metals
MOST
MetalsELEMEIEIIE.IEtst
have s
Luster
conductivity
castintoshape
malleable
ductile
solidsvs Liquids vs Gases
only 2elements are liquid roomtemp
Mercury Hg metal
Bromine Br nonmetal
Theremainingmetals are solid
Nonmetals includesolids gases
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