Activity
Chemistry Collective

Chem Collective: Coffee Problem

For Teachers 9th - 10th
In this activity, students use knowledge of specific heat capacity to mix together hot coffee and cold milk to create a solution of coffee at a desired temperature. In this randomized problem, each student is given a different final...
Activity
Chemistry Collective

Chem Collective: Unknown Weak Acid Problem

For Students 9th - 10th
Perform an experiment to determine the pKa and concentration of an unknown acid.
Activity
Chemistry Collective

Chem Collective: Unknown Weak Acid Problem Bonus

For Students 9th - 10th
Perform an experiment to determine the concentrations of a mixture of two acids.
Activity
Chemistry Collective

Chem Collective: Solubility and the Common Ion Effect

For Students 9th - 10th
Determine the concentration of an unknown NaCl solution using the common ion effect.
Interactive
Chemistry Collective

Chem Collective: Metal Ligand Binding

For Students 9th - 10th
Use silver chloride to determine the binding constant for a metal ligand complex.
Activity
Chemistry Collective

Chem Collective: Determine the Concentration of the Unknown Strong Acid

For Students 9th - 10th
Perform a titration using an indicator to determine the concentration of an HCl solution.
Activity
Chemistry Collective

Chem Collective: Designing a Buffer Solution With a Specific P H

For Students 9th - 10th
Create a buffer solution at a specific pH using a weak acid and its conjugate base.
Activity
Chemistry Collective

Chem Collective: Unknown Base Problem

For Students 9th - 10th
Perform an experiment to determine the pKa and concentration of an unknown weak base.
Interactive
Chemistry Collective

Chem Collective: Alcohol Density Problem

For Students 9th - 10th
Determine the concentration of an alcohol solution from its density.
Activity
Chemistry Collective

Chem Collective: Creating a Buffer Solution

For Students 9th - 10th
An exercise to design a buffer solution with specific properties.
Activity
Chemistry Collective

Chem Collective: Dna Dye Binding: Equilibrium and Buffer Solutions

For Students 9th - 10th
Students examine equilibrium and buffer solutions in a biological setting.
Interactive
Chemistry Collective

Chem Collective: Exploring Oxidation Reduction Reactions

For Students 9th - 10th
Design an experiment to order Cu, Mg, Zn and Pb from strongest to weakest reducing agent.
Activity
Chemistry Collective

Chem Collective: Heats of Reaction: Hess's Law

For Students 9th - 10th
This activity provides a demonstration of Hess's Law using three reactions: the solubility NaOH in water, the solubility NaOH in HCl, and the reaction of a solution of HCl and a solution of NaOH.
Activity
Chemistry Collective

Chem Collective: Stoichiometry and Solution Preparation Problem

For Students 9th - 10th
In this limiting reagents problem, students mix together solutions in different ratios in an attempt to produce a final solution that contains only 1 product.
Activity
Chemistry Collective

Chem Collective: Textbook Style Limiting Reagents Problem Ii

For Students 9th - 10th
In this activity, students practice with experiments involving limiting reagents and the test their knowledge to determine the concentration of an unknown solution.
Activity
Chemistry Collective

Chem Collective: Predicting Dna Concentration

For Students 9th - 10th
In this limiting reagents problem, students are given specific concentrations of DNA solutions and are asked to predict what products and reactants will remain after a specific volumes are mixed and reaction has occurred.
Activity
Chemistry Collective

Chem Collective: Cobalt Chloride and Le Chatlier's Principle

For Students 9th - 10th
In this activity, students safely explore the equilibrium reaction of the cobalt chloride reaction.
Activity
Chemistry Collective

Chem Collective: Dna Binding Problem

For Students 9th - 10th
In this activity, students explore equilibrium constants in biochemical systems by measuring the binding constant of a DNA-Dye reaction.
Activity
Chemistry Collective

Chem Collective: Temperature and the Solubility of Salts

For Students 9th - 10th
Examine the solubilities of salts based on temperature.
Activity
Chemistry Collective

Chem Collective: Determining the Heat of Reaction in Aqueous Solution

For Students 9th - 10th
In this activity, students perform an experiment to determine the heat of a reaction.
Activity
Chemistry Collective

Chem Collective: Measuring the Heat Capacity of an Engine Coolant.

For Students 9th - 10th
As an analytical chemist at a company developing new engine coolants your task is to determine the heat capacity of a newly developed product and then to determine if its heat capacity is greater of less than that of ethylene glycol.
Activity
Chemistry Collective

Chem Collective: Measuring the Heat Capacity of an Engine Coolant Ii

For Students 9th - 10th
Measure and compare the heat capacity of an unknown liquid with an unknown density.
Activity
Chemistry Collective

Chem Collective: Camping Problem I

For Students 9th - 10th
In this part of the MRE scenario, students measure the enthalpy of a reaction.
Activity
Chemistry Collective

Chem Collective: Camping Problem Ii

For Students 9th - 10th
In this part of the MRE scenario, students determine change in the enthalpy of a reaction as the concentration of reactants are varied.

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