What affects the boiling point of water?
Water will come to boil more quickly at lower temperatures at higher altitudes.
A liquid will start to boil when the temperature of the liquid reaches a point where the pressure of the vapor from the liquid equals the pressure of the surrounding air. A liquid placed in vacuum will boil at lower temperatures than in normal conditions. Different liquids will have different boiling temperatures.
When water is boiled at higher altitudes above sea level, it will boil at lower temperatures. For example, water will boil at only 69°C on top of Mount Everest compared to 100°C at sea level. This is because, at higher altitudes, the air pressure is lower and therefore evaporation happens at lower temperatures.
Adding salt, sugar or other substances to water will usually increase its boiling temperature. This will be useful, for example, when boiling you need to boil water at higher altitudes and would like to attain a higher temperature to ensure that microorganisms in the water are killed.
Always handle boiling water with extreme care to avoid getting burned. Adult assistance is required.