Buffer Composition and Function Practice

Description

This assignment is a Google Doc worksheet that will help students understand what buffer solutions are made of and how they keep pH values from changing significantly. There is also a link to a help video for one of the more challenging sections. The document can be printed on paper or shared with students via Google or your LMS. The following topics are addressed:

Calculating the pH of a buffer solution
Choosing a weak acid and salt combination to produce a buffer
Describing how buffers keep pH from changing significantly

I use this in my own chemistry classroom to help the students practice this difficult concept. The table is helpful because it forces them to consider each aspect of buffer composition and function. It usually takes my students 30 minutes to complete it and it can be done in class or as a homework assignment. This has been a very effective activity that I've used for many years.

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Buffer Composition and Function Practice

Name: Buffer Composition and Function Practice
Brand: Snap Chemistry
SKU: 11099004
Price: 1.00 USD
Availability: InStock

Snap Chemistry

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Highlights

Digital downloads

Google Apps

Grades

9th - 12th

Subjects

Chemistry

Standards

NGSSHS-PS1-6

NGSSHS-PS1-7

NGSSHS-PS1-2

Description

Calculating the pH of a buffer solution
Choosing a weak acid and salt combination to produce a buffer
Describing how buffers keep pH from changing significantly

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Reported resources will be reviewed by our team. Report this resource to let us know if this resource violates TPT's content guidelines.

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Questions & Answers

Standards

to see state-specific standards (only available in the US).

NGSSHS-PS1-6

Refine the design of a chemical system by specifying a change in conditions that would produce increased amounts of products at equilibrium. Emphasis is on the application of Le Chatelier's Principle and on refining designs of chemical reaction systems, including descriptions of the connection between changes made at the macroscopic level and what happens at the molecular level. Examples of designs could include different ways to increase product formation including adding reactants or removing products. Assessment is limited to specifying the change in only one variable at a time. Assessment does not include calculating equilibrium constants and concentrations.

NGSSHS-PS1-7

Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction. Emphasis is on using mathematical ideas to communicate the proportional relationships between masses of atoms in the reactants and the products, and the translation of these relationships to the macroscopic scale using the mole as the conversion from the atomic to the macroscopic scale. Emphasis is on assessing students’ use of mathematical thinking and not on memorization and rote application of problem-solving techniques. Assessment does not include complex chemical reactions.

NGSSHS-PS1-2

Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties. Examples of chemical reactions could include the reaction of sodium and chlorine, of carbon and oxygen, or of carbon and hydrogen. Assessment is limited to chemical reactions involving main group elements and combustion reactions.