Yes, most water boils at 100 celsius.
Yes, ice melts at 0 degrees Celsius (32 degrees Fahrenheit) and boils at 100 degrees Celsius (212 degrees Fahrenheit at sea level). These are the specific temperatures at which the phase transitions occur for water.
More dense than what? I presume you mean is it more dense at that temperature than at lower temperatures. The answer is no, it gets denser at lower temperatures, all the way down to 4 degrees centigrade. Then it gets less dense again.
Water boils at lower temperatures at higher altitudes due to the decrease in atmospheric pressure. At the top of Mt. Everest, the atmospheric pressure is significantly lower than at sea level, causing water to boil at temperatures below 100 degrees Celsius.
The density of pure water at 97 degrees Celsius is approximately 0.971 grams per cubic centimeter. At this temperature, water is less dense compared to at 4 degrees Celsius (which is the temperature at which water has its highest density).
Good answer above. Just to add: At the chemical level, the water molecules that constitute liquid water H2O(l) increase in energy as they are heated which causes the velocity or the molecules to increase until the heat of vaporization (boiling) is reached.
Water can boil below 100 degrees Celsius depending on the area of the world. A lab was conducted in science class that our water boiled at 94.6 degrees Celsius. The average boiling point for water is 100 degrees Celsius but that does not mean it will always be that degree to boil.
On top of a mountain
No, pure water boils at 100 degrees Celsius at normal temperature and pressure. The fact that the water boiled at 102 degrees Celsius indicates that it may not be pure and could contain impurities or dissolved substances.
Yes, ice melts at 0 degrees Celsius (32 degrees Fahrenheit) and boils at 100 degrees Celsius (212 degrees Fahrenheit at sea level). These are the specific temperatures at which the phase transitions occur for water.
At Zero degree Celsius.(or less)
The temperature of boiling water is 212 degrees Fahrenheit. This is 100 degrees Celsius. Water will freeze at 32 degrees Fahrenheit (0 degrees Celsius).
More dense than what? I presume you mean is it more dense at that temperature than at lower temperatures. The answer is no, it gets denser at lower temperatures, all the way down to 4 degrees centigrade. Then it gets less dense again.
As temperature increases, the ability for water to absorb CO2 decreases. That is why we see higher CO2 when temperature rises in our atmosphere.
9 degrees less than 0 degrees Celsius is -9 degrees Celsius.
9 degrees less than 2 degrees Celsius would be -7 degrees Celsius.
12 degrees less than 2 degrees Celsius is -10 degrees Celsius.
When the pressure is reduced. Water only boils at 100 degrees Celsius when the air pressure is one atmosphere. So up a mountain, where the air pressure is lowered, water boils at a lower temperature.