Physics Van 3-site Navigational Menu

Physics Van Navigational Menu

Q & A: boiling and freezing water

Learn more physics!

Most recent answer: 10/22/2007
Q:
Ok I’m doing this science project about boiling and freezing point of water and the effects when adding different substances like baking soda, sugar, salt, orange juice and just plain water. I want to know what are the effects? I hope to get your answer soon! Thank you
- Kim
Palm Middle School, California
A:
Hi Kim- We've got a number of answers on this site discussing changing water boiling and freezing points. You should be able to guess one answer pretty easily- the effect of adding plain water!

As you take data here's some things you might want to look for:
1. When you change the amount of salt or sugar, etc. that you add, how does that affect the change in the boiling or freezeing points? Does twice as much solute (salt etc) have twice as big an effect?
2. Is there any connection between the effects on the boiling and freezing points? When some solute makes a big difference for one, will it make a big difference for the other as well?

Someday, you may take a beginning course on thermal physics, where you can learn not only what sorts of effects to expect in these experiments but also why to expect them. You can even get some information about that on this site.

Mike W.

(published on 10/22/2007)

Follow-up on this answer.