yes
hot water is made of molecules that can move faster and faster and you can boil or microwave the water to make it become hotter and hotter
No, the water will not be hotter the second time you boil a kettle. Once water reaches its boiling point at 100 degrees Celsius, it cannot get any hotter unless it is under pressure. Boiling water multiple times will not increase its temperature beyond 100 degrees Celsius.
Yes, it is recommended to boil water before adding pasta to cook it.
Yes, for example, water when you boil it in a kettle or pot. However, it won't stay that way; when different materials are in contact (in this case, the kettle and the colder air), there is a natural tendency for heat to flow from the hotter to the colder object.
Since the salt makes water boil, get colder, and melt faster, salt water would be warmer in the summer and colder in the winter, but the salt would help, but not 100%, keep the water from freezing.
no.. Syrups are more viscous so require higher temprature to boil
The temperature remains the same. Water cannot get hotter than the boiling point.
Yes, it is recommended to boil water before adding rice when cooking as this helps the rice cook evenly and thoroughly.
Food colouring does not affect how long it takes for water to boil. Both clear water and water with food colouring boil at the same speed with no real obvious differences in time.
This will depend on the source of your water. In most developed countries, it is not necessary to boil water before freezing it for ice cubes because the water is safe to drink. However, in developing countries that don't have consistent safe pathogen-free water, you should boil the water to kill any of the bacteria in it before freezing it into ice cubes.
If you continue to boil water above 100°C, the water will not get any hotter because it will all turn into steam. The temperature will remain constant as long as there is water left to boil, but the additional heat will cause more water to turn into steam.
Salt water actually boils more slowly than fresh water because the presence of salt raises the boiling point of the water. This means that more energy is needed to make the salt water boil compared to fresh water.