Physical Property: color, boiling, point, melting point, texture
Chemical Property: a reaction, rust, decomposition
Physical Change: boiling, freezing, melting, reversible
Chemical Change: change of the molecular structure, forms precipitate ie: color, bu
ONE TUBE CHEMICAL REACTION
Problem: What indicated the occurrence of a chemical change?
One test tube
A small piece of parafilm
Am iron nail ( sand it with sandpaper to remove an protective coating or rust)
Copper sulfate (blue crystals)
1. Boiling-point elevation- The difference in temperature between the boiling point
of a solution and the boiling point of the pure solvent.
2. Concentrated Solution- contains a large amount of solute.
3. Concentration- a measure of t
Unit 2: Details on Midterm from Review Session
DO NOT need to know individual scientists, except for those Im listing
(pg 104) JJ Thomson and his experiment
o Discovered electron
o Experiment was looking through a cathode ray
(pg 107)- Rutherford a
1. Pg. 119 #30
What does the number represent in isotope platinum-194?
Be able to write the symbol for the atom using superscripts and
2. Energy levels pg. 128