It depends on what's burning.
ignition temperature
oxidation
The temperature at which a liquid changes into a gas is called the boiling point.
The phase of any given substance is governed by two factors, temperature and pressure. Everything has a liquid phase, in the right temperature range if the pressure is high enough. If the pressure is not high enough, you get sublimation.
The temperature will decrease. If enough heat is removed the liquid may become a solid.
Known as a liquid but obviously it can be all three. Mercury is a liquid at room temperature, it will solidify if you make cold enough, -40 C and be gas if you make it hot enough, +357 C. It expands and contracts easily in this liquid form, which is why old thermometers used it.
propanone is liquid at room temperature
flash point
If it reaches a high enough temperature then it will become a liquid.
Hydrogen gas and oxygen gas are gases at room temperature. Oxygen supports combustion and hydrogen is very combustible. Water is a liquid at room temperature and is not combustible and does not support combustion.
Any liquid can be a gas if you heat it strongly enough.
The temperature at which a liquid changes into a gas is called the boiling point.
Any liquid can be changed into solid, if you can manage to expose it topressure that is high enough and temperature that is low enough.
They usually expand and when the temperature gets high enough, turns to liquid.
It all depends on the liquid and the situation. I'm afraid your question does not specify enough to be answered in full.
Addition of heat produces more liquid, breaking apart the intermolecular bonds, rather than increasing bond oscillation (increasing temperature).
When a liquid is heated to a temperature at which particles throughout the liquid have enough kinetic energy to vaporize, the liquid begins to boil.
All metals can be made liquid if they reach a high enough temperature. Mercury is the only metal to be liquid at STP and room temperature though; the others require much higher temperatures.
Its boiling point.