ALEX Learning Activity Resources

ALEX Learning Activities  
   View Standards     Standard(s): [SC2015] PSC (9-12) 4 :
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.

[SC2015] CHEM (9-12) 6 :
6 ) Use mathematics and computational thinking to express the concentrations of solutions quantitatively using molarity.

a. Develop and use models to explain how solutes are dissolved in solvents.

b. Analyze and interpret data to explain effects of temperature on the solubility of solid, liquid, and gaseous solutes in a solvent and the effects of pressure on the solubility of gaseous solutes.

c. Design and conduct experiments to test the conductivity of common ionic and covalent substances in a solution.

d. Use the concept of pH as a model to predict the relative properties of strong, weak, concentrated, and dilute acids and bases (e.g., Arrhenius and Brønsted-Lowry acids and bases).

Subject: Science (9 - 12)
Title: Exploring Acids and Bases

How do I know if a substance is an acid or base?  In this activity, the students will use a digital simulation model to explore and gather evidence on how acids and bases dissociate in solution. The students will also gather data on how pH and conductivity change with the strength of an acid or base. Finally, they will develop their own working definition of acid, base, indicator, and pH scale by gathering data during the simulation. This activity is an introductory activity to acids and bases and no prior knowledge is needed to complete the simulation.

Note: The PhET simulation is a free resource that is copyrighted by the University of Colorado. The handout and lesson format are teacher-created. 

This activity was created as a result of the GAP Resource Summit.

ALEX Learning Activities: 1

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