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# Exothermic & Endothermic Reactions—An Energy Changes Laboratory Kit

By: The Flinn Staff

Item #: AP6128

Price: \$50.90

With the Exothermic and Endothermic Reactions Thermodynamics Laboratory Kit, students measure the temperature changes that occur in each calorimeter. Next, they determine the amount of heat released or absorbed by the reaction.

This item can only be shipped to schools, museums and science centers

## Product Details

Heat in? Heat out? Which is it? Introduce students to the energy changes that take place during exothermic and endothermic chemical reactions. In this lab activity, students perform three separate reactions—including both neutralization and dissolving of salts. With each set of reactants, students measure the significant temperature changes that occur in each calorimeter, and then determine the amount of heat released or absorbed by the reaction. Students classify each reaction as exothermic or endothermic and write the chemical equation. All necessary chemicals, calorimeter cups, Teacher Notes and reproducible student handouts are provided in the kit.

Complete for 30 students working in pairs.

## Specifications

Materials Included in Kit:
Ammonium nitrate, 250 g, 2
Hydrochloric acid solution, 1 M, 800 mL
Sodium hydroxide, flakes, 300 g
Sodium hydroxide solution, 1 M, 800 mL
Cup, polystyrene, 8 oz, 30

## Correlation to Next Generation Science Standards (NGSS)†

### Science & Engineering Practices

Developing and using models
Planning and carrying out investigations
Analyzing and interpreting data
Using mathematics and computational thinking

### Disciplinary Core Ideas

MS-PS1.A: Structure and Properties of Matter
MS-PS1.B: Chemical Reactions
MS-PS3.A: Definitions of Energy
MS-PS3.B: Conservation of Energy and Energy Transfer
HS-PS1.A: Structure and Properties of Matter
HS-PS1.B: Chemical Reactions

### Crosscutting Concepts

Systems and system models
Energy and matter
Stability and change