Combustion and Flame
Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
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Check
Across:
1.
Used for extinguishing fire.
3.
Caused when combustible is heated.
4.
Substance which burnt to produce considerable heat without the formation of undesirable products.
5.
Substances which burn.
Down:
1.
The efficiency of fuel, that it gives while giving energy.
2.
Renewable energy from water.
OK