1. Warm up 9/19 & Lab Turn in* Identify the following symbols & identify whether they are Elements (E) or Compounds (C). N
H2O Na K
H2SO4
HCl Cl
NaCl
Write the equation: H2O+ H+  H3O +
What are the products and what are the reactants?
*Staple pages and put in basket in rear of classroom.

2. ACIDS, BASES, AND pH pp

3. Water Polar (covalent) compound
Water has a positive (+) and negative (-) “pole”
(+) is due to H and (-) is O
acts like a magnet with + attracted to –
pulls apart molecules like NaCl (ionic bond)

4. Water Bonding covalent bonds hold H2O together
hydrogen bonds hold molecules of H2O
Covalent > Hydrogen

5. Acids and Bases
H2O = water
H+ = hydrogen ion
OH- = hydroxide ion

6. Acids and Bases H2O  H+ + OH- H+ reacts with H2O
H2O + H+  H3O+ (hydronium)
H3O+ more commonly written as H+

7. Acids Acids: H+ > OH- pH less than 7
Acid Properties: tastes sour, highly corrosive
EX. HCl, H2SO4

8. Bases Bases: OH- > H+ pH more than 7
Base Properties: tastes bitter, feel slimy
EX. NaOH, Mg(OH)2

10. pH power of Hydronium
measures acidity (from 0-14) and how much H3O+/H+ is present. The closer to 0, the more the H3O +/H+
0 up to 7 = acid
= neutral
over 7 = base/alkaline
Can use indicators to tell the pH ( phenol red, pH paper, litmus, BTB)