demonstration of exothermic and endothermic reactions
Updated: November 18, 2024
Summary
The video demonstrates two different types of chemical reactions: endothermic and exothermic. In the endothermic reaction, barium hydroxide and ammonium chloride combine, causing the temperature to drop below zero and freeze the water between the beaker and wood. On the other hand, an exothermic reaction occurs when calcium carbonate reacts with concentrated sulfuric acid, starting at 22 degrees Celsius. This showcases the fascinating phenomenon of reactions either absorbing or releasing heat energy.
TABLE OF CONTENTS
Demonstration of Endothermic Reaction
The demonstration of an endothermic reaction using barium hydroxide and ammonium chloride, where the temperature drops below zero and water between the beaker and wood freezes.
Exothermic Reaction Experiment
An exothermic reaction shown with calcium carbonate and concentrated sulfuric acid, with an initial temperature of 22 degrees Celsius.
FAQ
Q: What is an endothermic reaction?
A: An endothermic reaction is a chemical reaction that absorbs heat from its surroundings, resulting in a decrease in temperature.
Q: Can you explain the reaction between barium hydroxide and ammonium chloride?
A: The reaction between barium hydroxide and ammonium chloride is an endothermic reaction where the temperature drops below zero, and water between the beaker and wood freezes.
Q: What is an exothermic reaction?
A: An exothermic reaction is a chemical reaction that releases heat into its surroundings, resulting in an increase in temperature.
Q: Describe the exothermic reaction involving calcium carbonate and concentrated sulfuric acid.
A: The reaction between calcium carbonate and concentrated sulfuric acid is an exothermic reaction with an initial temperature of 22 degrees Celsius, indicating that heat is being released during the reaction.
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