Department: ______Science_______________ Teacher: ____Davis__________________
Course: ____Honors Chemistry____________________
Topic / Theme: _______Acids, Bases and Salts___________________________________________
Essential Question:
Key Questions:
What ions in solution make a substance acidic,
basic, or neutral and how can we calculate the
concentration of those ions?
What are the simple properties of acids and bases?
What ions determine pH and what are the relations of these ions on the pH
scale? How is pH, pOH, [H+1], [OH-1] and Kw calculated? How are acids and bases
named systematically? How are acids and bases described according to the
Bronsted-Lowry definition? How are acids and bases described according to the
Arrhenius definition? What is the difference between strong and weak acids and
bases in terms of percent dissociation? How can acid and base dissociation
constants be calculated given the equilibrium concentration of ions? How can pH
of a strong acid or base be calculated given the initial concentration of ions?
How can the pH of a weak acid or base be calculated given the initial
concentration of ions and the acid or base dissociation constant? What is a
buffer and what determines a buffers capacity? How is the HendersonHasselbach equation used to relate the pH of a buffered solution to the
concentration of the conjugate acid-base pair used? How is the pH change
calculated when a strong acid or base is added to a buffered solution? How are
acid-base titrations performed and what is their purpose? Use titration data and
titration curves to determine the concentration of an unknown acid or base.
Why do salts affect the pH of a solution? How do you measure pH?
How do you explain the fact that, “ The stronger an acid the weaker its conjugate
base” ? How can a weak acid be extremely dangerous?
Standards (List the primary standard and the key verbs from the elements)
____
Duration:_______2 Weeks_______________
Essential Vocabulary: Arrhenius acid, Arrhenius
base, monoprotic, diprotic, triprotic, BronstedLowry acid, Bronsted-Lowry base, conjugate acid,
conjugate base, conjugate acid-base pair,
hydronium ion, self-ionization of water, Lewis acid,
Lewis base, Ion product constant for water, neutral
solution, acidic solution, basic solution, alkaline
solution, indicator, pH meter, pH paper, acid
dissociation constant, base dissociation constant,
neutralization reaction, salt, salt hydrolysis,
titration, standard solution, end point, equivalence
point, buffer, buffer capacity
Higher-Order Student Engagement
(Specific activities/tasks that will actively engage students in higher order learning)
SC7. Students will characterize the properties that describe solutions and the nature of
acids and bases.
b. Compare, contrast and evaluate the nature of acids and bases
* Arrhenius, Bronsted-Lowry Acid / Bases
* Strong vs. weak acids / bases in terms of percent dissociation
* Hydronium ion concentration
* pH
* Acid – Base neutralization
Call on specific students with content specific questions every day.
Homework Problems.
Unit Review Homework/Study Guide.
Practice Problems (Worksheet)
Laboratory Activities.
Unit Test
(honors chemistry tasks require students to apply knowledge to solve problems)
Assessment of Learning Goals : Formative and Summative
Laboratories
(How do you know if your students have learned?)
Call on specific students with content specific questions every day.
Nightly Homework Problems.
Unit Review Homework/Study Guide.
Laboratory Activities.
Unit Test
Hydrolysis of salts
Titration lab
Titration curve lab
We empower students to discover, think, and succeed.
GPS Standards (Optional)
SC7. Students will characterize the properties that describe solutions and the nature of acids and bases.
b. Compare, contrast and evaluate the nature of acids and bases
* Arrhenius, Bronsted-Lowry Acid / Bases
* Strong vs. weak acids / bases in terms of percent dissociation
* Hydronium ion concentration
* pH
* Acid – Base neutralization
We empower students to discover, think, and succeed.