Exothermic and Endothermic Reactions

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Objective

I can analyze a chemical reaction to classify reactions as exothermic or endothermic, predict its effect on the surrounding environment and determine when thermodynamic equilibrium has been reached.

Part 1 of 3

Warm-up video

Bozeman Science · 4:35Vetted channel

We don't generate video — this one is by Bozeman Science on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.

Part 2 of 3

Practice

16 questions

1

Define exothermic and endothermic reactions in terms of energy transfer between a system and its surroundings.

2

Explain the difference between the "system" and the "surroundings" in the context of a chemical reaction, providing examples.

Part 3 of 3

Exit ticket

Quick comprehension check

A reaction occurs in a beaker. You touch the beaker and it feels warm. Is the reaction exothermic or endothermic? What is the effect of the reaction on the surrounding environment? A reaction is represented by the following energy diagram: Reactants have an energy level of 150 kJ, and products have an energy level of 75 kJ. Is this reaction exothermic or endothermic? Explain your reasoning.

Sample answer included in the free materials

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