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Energy in or out - classifying reactions

Description

Students carry out test-tube reactions and detect whether the process gives out or takes in energy (exothermic or endothermic reaction).

Credits

:
This is an experiment from the Practical Chemistry project, developed by the Nuffield Foundation and the Royal Society of Chemistry.
energy-in-or-out-classify...



Apparatus Chemicals

Each group of students will need:

Eye protection

Test-tubes, 3

Spatula

Dropping pipette

Measuring cylinder, 10 or 25 cm3

Glass stirring rod

The teacher will need:

Eye protection

Boiling tube (Note 1)

Spatula

Glass stirring rod

Thermometer (Note 2)

Anhydrous copper(II) sulfate (HARMFUL), about 1 g

Citric acid (IRRITANT), about 1 g

Sodium hydrogencarbonate, about 1 g

Copper(II) sulfate solution, 0.5M, 5 cm3

Zinc powder (HIGHLY FLAMMABLE, DANGEROUS FOR THE ENVIRONMENT), about 1 g

The teacher will need:

Ammonium nitrate crystals (OXIDISING), about 5 g

Refer to Health & Safety and Technical notes section below for additional information.

 










Page last updated October 2015

Students carry out test-tube reactions and detect whether the process gives out or takes in energy (exothermic or endothermic reaction).

ADDITIONAL INFORMATION

This is a resource from the Practical Chemistry project, developed by the Nuffield Foundation and the Royal Society of Chemistry. This collection of over 200 practical activities demonstrates a wide range of chemical concepts and processes. Each activity contains comprehensive information for teachers and technicians, including full technical notes and step-by-step procedures. Practical Chemistry activities accompany Practical Physics and Practical Biology.