Class on 9/16/11

Announcements: Unit Test on Thursday, Chem Day on Friday

Homework: Finish Web-Assigns before unit test

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Mr. Paek went over the differences between Molecules and Compounds, and also the difference between a Mixture and a Pure Substance

Molecule: Any 2 or more atoms bonded together

Compounds: 2 or more DIFFERENT types of atoms bonded together

Mixture: Combo of 2 DIFFERENT types of Molecules or Atoms

Pure Substance: Only 1 type of atom or molecule

We also did a Matter Lab where we drew pictures of what we saw at each station, wrote the chemical formulas of what was present, and then make a list of terms that apply to the station.(ex. Atoms, Molecules, Elements, Compounds, Pure Substance, Mixture)

Black=C

Yellow=H

Green=O

STATION 1

Picture: 6 black atoms Formula: 6C Terms: Atoms, Pure Substance, Element

STATION 2

Picture: 4 yellow molecules(2 yellows bonded) Formula: 4H2 Terms: Molecules, Pure Substance

STATION 3

Picture: 1 black atom, 1 black molecule(2 blacks bonded), 2 green atoms, 1 yellow molecule(2 yellows bonded), 1 compound(2 yellows, and a black bonded) Formula: 2O + CH2 + H2 + C2 +C Terms: Molecule, Atom, Compound

STATION 4

Picture: 1 black atom, 1 black molecule(2 black bonded), 1 black molecule(3 blacks bonded) Formula: C2 + C3 + C Terms: Mixture, Atom, Molecule

STATION 5

Picture: 2 green atoms, 1 green molecule(2 greens bonded) Formula: O2 + 2O Terms: Atom, Molecule, Mixture

STATION 6

Picture: 2 Compounds(3 yellows, 1 black, 1 green bonded) Formula: 2H3 2C 2O Terms: Molecule, Compound, Pure Substance

And THAT is what we did on Friday

The next scribe will be...................................Dambi