Transcript Unit 11: States of Matter

Unit: Acids, Bases,
and Solutions
Acids and Bases: Review of naming and
Characteristics
After today you will be able to…
• Define an acid and base according
to the Arrhenius definition
• Review the correct way to write
the names and formulas for acids
and bases
• Describe and list properties that
pertain to acids and bases
There are three different
types of definitions for
acids and bases, but for
our purposes we will only
work with one: Arrhenius.
Acids
An Arrhenius acid is an ionic
+
compound that has the H ion
as its cation.
•Acids have a sour taste
(Ex: citric acid)
•Acids will cause indicators to
change colors
Indicators: Are
substances that change
color based on pH.
Acids
•Turn litmus paper pink or red
•The pH of acids is less than 7
•Acids will react with metals in a
single replacement reaction called
corrosion.
•Acids will react with bases in a
double replacement reaction called
neutralization.
Bases
An Arrhenius base is an ionic
compound that has the OH ion
as its anion.
•Bases have a bitter taste
•Bases are slippery (Ex: soap)
•Bases will cause indicators to
change colors
Bases
•Bases change litmus paper
blue.
•The pH of bases is greater
than 7.
•Bases will react with acids
(neutralization)
Review: Naming and Formula
Writing for Bases
Use typical rules for naming ionic
compounds:
Sodium hydroxide
NaOH ___________________
Magnesium hydroxide
Mg(OH)2 ___________________
Al(OH)3
Aluminum Hydroxide ________
Al+3
(OH)-1
Review: Naming and Formula
Writing for Acids
If the anion ends in…
hydro____ic acid
“ide” then, ___________________
____ic acid
“ate” then, ___________________
____ous acid
“ite” then, ____________________
Review: Naming and Formula
Writing for Acids
For acids, look at the anion
Remember H is always
ending!
the cation for acids!
+1
“phosphite”
H3PO3
HBr
Phosphorous acid
___________________
“bromide”
Hydrobromic acid
___________________
“ic” must have been “ate”
H2CO3
Carbonic acid ______________
H+1
(CO3)-2
Questions?
Begin WS3