How does water extinguish fire? Explain stating the principle involved?

Answer 1

water mask the burning material, hence exchange of oxygen between atmosphere and the burning material is prevented consequently burning stops.

Answer 2

Water prevents oxygen from fuelling the flames.

If you put a glass on top of a candle, the flame will extinguish from a lack of oxygen....water on a fire works in the same way.

Answer 3

there are a few things going on

1. water cools the materials being burned reducing their ability to give off flammable gases

2. water turns to steam when it hits heat and steam is an oxygen scavenger- meaning it reduces the amount of oxygen in the vicinity- thereby reducing the fires ability to burn as all combustion requires oxygen

3 if the water level can be raised to a level that accumulates on the burning material, this does both cooling and blocking oxygen

Answer 4

The fire "triangle" requires heat, fuel, and oxygen. Take away any one of these, and fire extinguishes. Water takes away the heat factor.

Answer 5

as ya noe that water molecules are strtch out yet joined together.....these molocules has a greater volume. it covers the fire molecules totally. but the heat frm the fire inside and surrounding heat given out by the fire earlier makes the water molecules fixtured togather, like solid molecules and thus the water molecules explodes and the fire is gone

Answer 6

well concept behind this is IGNITION TEMPERATURE ..pls note that concept will be different if we use carbon-di-oxide instead of this... first i will tell u wat is this ignition temp-Minimum temperature to which a substance must be heated before it will spontaneously burn independently of the source of heat;...it means if somehow u able to lower the temp of burning substance u can stop it from further burning....yes ur guessing rite......water simply lowers temperature from its ignition temp.