When you heat water on a stove, bubbles form on the bottom of the pot before the water boils. What are these bubbles? Why do they form?
Step 1 of 3
Heating of water on a stove, forms bubbles on the bottom of the pot before the water boils.
The bubbles form because of two reasons:
1. Because of already dissolved gases in water. As water is heated, because of agitation these dissolved gaseous molecules rise up and escape.
2. Because of non-uniform heating. If we heat water using a utensil which supplies heat only from bottom, the water attains an upward-decreasing temperature profile. Which means the water at the bottom is at a higher temperature. This leads 'water at the bottom' to reach boiling point faster than the rest of the water and hence it evaporates early and we can see bubbles in the bottom.
Textbook: Introductory Chemistry
Author: Nivaldo J Tro
This full solution covers the following key subjects: Water, form, bubbles, heat, boils. This expansive textbook survival guide covers 19 chapters, and 2046 solutions. This textbook survival guide was created for the textbook: Introductory Chemistry, edition: 5. Introductory Chemistry was written by and is associated to the ISBN: 9780321910295. Since the solution to 11Q from 13 chapter was answered, more than 387 students have viewed the full step-by-step answer. The answer to “When you heat water on a stove, bubbles form on the bottom of the pot before the water boils. What are these bubbles? Why do they form?” is broken down into a number of easy to follow steps, and 27 words. The full step-by-step solution to problem: 11Q from chapter: 13 was answered by , our top Chemistry solution expert on 05/06/17, 06:45PM.