Physics P3 and P4

Today we'll be finishing and printing the powerpoint from yesterday.  Once Mr. Cole has checked yours, you can print it and put it in a plastic pocket with your name on the assignment sheet.

Next, answer these questions in your books about the bubbles for tomorrow.

1. What is methane?
2. What two elements make it up? Use the picture below to help:
3. Watch the video below.  What are the three sides of the fire triangle here?
4. Is the explosion here exothermic or endothermic?
5. Use the bottom of the link from question 4 to explain what happens when you add sodium hydroxide to hydrochloric acid.
6. Why can water absorb a lot of heat? 
7. Why do you think it will be important to cover your hands in water tomorrow before holding burning methane bubbles?