why water is a liquid?
2006-10-12 00:33:10 · 6 answers · asked by Gianna 1 in Science & Mathematics ➔ Chemistry
The boiling point of a substance is determined by the type of bonds that its atoms are joined by. Water is bonded by covalent bonds and hydrogen bonds giving it a relatively low boiling point of 100C, it is also why it is a liquid at room temperature since the Hydrogen bonds hold it together better than substances that only have covalent bonds such as Carbon dioxide that is a gas at room temp. Substances that are bonded by ionic bonds have much higher boiling points and therefore usually exist as solids at room temperature sodium chloride salt is an example its boiling point is 1465C.
2006-10-12 00:45:53 · answer #1 · answered by Em_butterfly 5 · 4⤊ 0⤋
Actually, water has a HIGH boiling point for a such a small molecule (molar mass = 18). Compare it to methane, CH4, molar mass 16 which has a BP = -162 C. Also consider NH3, ammonia, molar mass 17, which has a BP = -33 C. There is some hydrogen bonding in NH3 so its BP is a lot higher than that of CH4, but the hydrogen bonding in NH3 isn't as strong as in H2O which is why the NH3 BP is lower than that of H2O.
2016-03-18 08:09:41 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Well alcohol is lower. The boiling point depends on the pressure. Take the pressure down low enough and water boils below its freezing point! This is how freeze dried food it made
2006-10-12 00:42:25 · answer #3 · answered by Anonymous · 0⤊ 3⤋
Me too agree with butter
2015-06-10 11:16:03 · answer #4 · answered by Anonymous · 0⤊ 0⤋
agree with butter...couldn't have said it better
2006-10-12 01:53:34 · answer #5 · answered by The Cheminator 5 · 0⤊ 1⤋
Well done em_butter.
2006-10-12 03:41:07 · answer #6 · answered by Dr. J. 6 · 1⤊ 0⤋