READ
p.24-33
Section 1.1 Substances: Pure Matter
10.1
Elements: Simplest form of matter.
Everything in universe is made from elements.
Can not be separated into simpler substances
10.2
Periodic Table: Organizing the elements
Getting to Know The Periodic Table
Symbol
Atomic
Number
Atomic
Mass
10.3
10.4
Compounds: Two or more elements.
Can be broken down into individual elements.
Table Salt
Sodium Chloride
NaCl
10.5
Compounds: Two or more elements.
Can be broken down into individual elements.
element
element
compound
Cl
NaCl
+
Na
+
10.6
Compounds: Two or more elements.
Can be broken down into individual elements.
compound
element
element
+
H2O
H2
+
O2
10.7
Compounds: Millions of compounds known.
Compound Name
Formula
Uses
Ammonia
NH3
fertilizer, cleaner
Aspirin
C9H8O4
pain relief
Baking Soda
NaHCO3
cooking
Caffeine
C8H10N4O2
stimulant
Ethanol
C2H6O
disinfectant, liquor
Propane
C3H8
fuel
Formula: Expresses the symbols and number of atoms/elements
in a compound.