💿 What Are Endothermic and Exothermic Reactions

note

This is an authentic video. Do not try to understand every word you hear.
Watch and listen for general and specific information by completing the following tasks.

Before you watch:

Exercise 1. Explain the meanings of these prefixes.

Exercise 2. Look at the few examples and categorise them as endothermic and exothermic.

Video

While you watch:

Exercise 3. Watch the first part of the video (till 00:30) and complete information comparing exothermic and endothermic reactions.

After you watch:

Exercise 4. Determine Endothermic and Exothermic reactions, and your own examples:

• Burning candle
• Decaying of fallen leaves
• Dissolving of potassium nitrate in water
• Rusting of iron nail
• Milk turned sour
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