# Calorimetry

## Classification of Matter and Idenitfication of chemical processes

Several videos illustrate physical processes or chemical processes. Students use a guided-inquiry activity sheet to classify the starting and ending substances and to identify the processes as physical or chemical.

## Heat of Neutralization Reaction II: HCl(aq) + NaOH(aq) Amounts of Reactants

Amounts of reactants influences the change in temperature and the heat exchanged during an acid-base neutralization reaction, HCl(aq) + NaOH(aq), but the value for the change in enthalpy is constant.

## Heat of Neutralization: HCl(aq) + NaOH(aq)

Heat of Neutralization: The initial temperature of 50.0 mL of 3.0 M HCl and a 3.0 M NaOH are measured using a digital thermometer probe. The HCl and NaOH react a calorimeter. The final temperature of the resultant solution is measured. The heat exchanged between the chemcial reaction and the solution is calculated. The change in enthalpy of the reaction, ∆H, the heat of neutralization is determined.

## Comparing Specific Heats of Metals

Comparing specific heats of metals, a guided-inquiry investigation. Two metal samples (Al and Pb) have the same mass and the same intitial temperature are each placed in separate 50.0 grams of cool water at the same temperature. Which metal will raise the temperature of the 50 grams of water the most? The metal with the higher specific heat will release more heat as it cools and thus will raise the temperature of water more compared to a metal with a lower specific heat. This interactive demonstration focuses on helping students gain a better conceptual understanding of heat, temperature, and specific heat.

## Calorimetry Heat of Solution Computer Simulation

A computer simulation designed to simulate a calorimeter experiment. Determine the heat of solution of a salt. Dissolving various substances in water, measure the mass of the salt, the intial temperature of the water, and the final temperature of the resultant solution.

## Calorimetry:Heat Exchange Hot Metal in Cold Water Computer Simulation

Calorimetry: Hot Metal in Cold Water Heat Exchange Computer Simulation Old Flash-Based

## Calorimetry Computer Simulation NEW html5 version

Calorimetry Computer Simulation is used to determine the heat exchanged in a variety of physical and chemical processes. NEW html5 version

## Cheeto Calorimetry

Place a burning Cheeto underneath a beaker of water. The burning Cheeto heats the water. The initial and final temperature of the water is measured and recorded. Temperature rise is monitored. The change in temperature is calculated. The heat gained by the water is calculated, q gained by water = mass of the water x specific heat of the water x ΔT. The heat given off by the Cheeto is calculated q loss + g gain = 0 q loss by Cheeto + q gain water = 0

## Thermite Reaction: aluminum reacts with iron(III) oxide

Aluminum and iron (III) oxide react to produce molten iron, aluminum oxide, and a tremendous amount of heat.

## Pages

© Copyright 2012 Email: Randy Sullivan, University of Oregon Chemistry Department and UO Libraries Interactive Media Group