SC15.PS.4

Science (2015) Grade(s): 09-12 - Physical Science

SC15.PS.4
Analyze and interpret data using acid-base indicators (e.g., color-changing markers, pH paper) to distinguish between acids and bases, including comparisons between strong and weak acids and bases.

Unpacked Content

Scientific and Engineering Practices

Analyzing and Interpreting Data

Crosscutting Concepts

Patterns

Knowledge

Students know:

An acid may be strong or weak, depending on its reaction with water to produce ions.
When an acid dissolves in water, a proton (hydrogen ion) is transferred to a water molecule and produces a hydronium ion.
A base may be strong or weak, depending on the number of hydroxide ions readily produced in solution.

Skills

Students are able to:

Recognize common inorganic acids including hydrochloric (muriatic) acid, sulfuric acid, acetic acid, nitric acid and citric acid.
Recognize common bases including sodium bicarbonate, and hydroxides of sodium, potassium, calcium, magnesium, barium and ammonium.
Use the pH scale to measure acidity or basicity.

Understanding

Students understand that:

Acids are compounds that contain hydrogen and can dissolve in water to release hydrogen ions in solution.
Bases are substances that dissolve in water to release hydroxide ions (OH-) into solution.
The neutralization of an acid with a base produces water and a salt.

Vocabulary

Acid
Base
Indicator
pH
Arrhenius theory
Strong acid/base
Weak acid/base
Neutralization
Titration

Aligned Learning Resources

Exploring Acids and Bases

Design by Adaptive Theme