Lesson 16 of 19
Checkpoint: burning, equations and useful changes
Show on a big screenFive ideas from the last four lessons. Answer, read the note, and try again.
A lid is put on a burning pan. The flame goes out. Why?
Which of these is a combustible substance?
Which side of the fire triangle does water mainly take away?
In magnesium + oxygen → magnesium oxide, what is magnesium oxide?
Food rots in a compost pit and makes compost. What kind of change is this?
0 of 5 answered
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