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Chapter 4:
I
...
Nonmetals: P4, C, S8
2
...
Metals, Ag, U
II
...
Dalton's Atomic Theory:
1
...
The atoms of a given element are identical, and the atoms of different elements are different in some
fundamental way
- the number of protons defines the element
3
...
A given
compound always has the same relative numbers and types of atoms
...
Chemical reactions involve the reorganization of the atoms and changes in the ways they are bound together
...
- Law of Conservation Mass: total mass before a chemical reaction must equal the total mass after the reaction has
stopped
...
Law of Definite Proportions (law of constant composition)
- A given compound will always contain exactly the same proportion of the elements by mass
- The mass fraction will always be the same no matter what the size sample
...
Evolution of our understanding of the atom:
- Thompson discovered the electron between 1898-1903
- e/m = -1
...
Types of Chemical Bonds: