💿 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. Unjumble the words and create a definition to a catalyst.

What is a catalyst?

Video

While you watch:

Exercise 2. Watch the first part of the video (till 00:45) and check your definition from Exercise 1.

Exercise 3. Watch the next part of the video (00:46-1:31) and complete the extract about catalysts work using NO MORE THAN TWO WORDS.

How does a catalyst work?

Exercise 4. Watch the next part of the video (1:32-2:50), and answer the following questions:

Where catalysts are used in everyday life?

Exercise 5. Watch the next part of the video (2:51-till the end) and complete the summary of the whole video about catalysts.

Catalysts:

After you watch:

Exercise 6. Give examples of reactions known to occurring in the presence of catalysts.