Unit 2 Chemistry Vocabulary Pt 2
Covalent bond where electrons are shared
UNEQUALLY
Polarity
Cohesion
“Co” means together with another of same
type
Adhesion
“Property of Water”
Water sticks to itself
In a drop
Capillary action when water goes up a plant
water molecules stick to each other and are
pulled up
“Property of Water”
Water sticks to other stuff like glass in a
graduated cylinder
When 2 or more elements are combined
PHYSICALLY – Can be separated like mixed nuts
Mixture
2 Types of Mixtures: Solution & Suspension
Solute
Solvent
Solution
Suspension
What gets dissolved
“U” put it into a liquid to be dissolved
Like salt into water; Salt is the solute
Stuff that does the dissolving; Like water with
salt; Water is the solvent
A kind of mixture
One thing (solute) is
DISSOLVED in another (solvent)
Another type of mixture
2 things mixed but NO DISSOLVING takes place
Italian Dressing that separates when sitting still
Measure of how much H+ ions are in solution
[H+] = concentration of H+ ions
H2O
H+ and OH
Acid
Base
pH
Acids
High [H+]
Increase in H+ ions = pH decreases
Bases
Low [H+]
Decrease in H+ ions = pH increases
What is it? Weak acid or base
What does it do? Reacts with strong acid or
base to neutralize the conditions and maintain
pH balance
Why? Homeostasis (pH Balance)
Buffers
Strong Acid
(0-3)
Weak Acid (Neutral) Weak Base
(4-6)
(7)
(8-10)
Strong Base
(11-14)