1. Classify these 26 substances into the 6 possible categories (metal element, nonmetal element, (or metalloid), compound, heterogeneous mixture, homogeneous mixture) the 26 things are in the room, so you can move around and look at them. There are 18 by the 18 electrical outlets; 3 on my desk; (be careful those are hazardous - just look) 3 in ne corner, 2 in back by fume hood. Leave them where they are for the next class. I have set them out in the room to look at, because looking at the substance will help you to remember why they are classified the way they are.
KCl(aq)
muddy water
aluminum foil
91% rubbing alcohol
Mercury liquid
Bromine gas
3% hydrogen peroxide
ninja turtle toy car
pepper
magnesium ribbon
saltwater
antimony
baking soda
epsom salts
zinc ignot
salt
lead weight
oil water
carbon
copper wire
air
coppersulfate
sulfur
rocks
copper sulfate solution
iodine solid and gas
2. when done, add an additional item to each of the 6 categories
3. sort these statements:
•1. Made of 1 kind of atom; not shiny, poor conductor
•2. Made of more than one kind of atom; always the same composition.
•3. Made of one kind of atom; malleable and ductile.
•4. Composition can vary; different types of material can be seen.
•5. Composition can vary; materials are uniformly spread out.
6. One kind of atom; semiconductor