Answer letter a and b pls

Introductory Chemistry: A Foundation
9th Edition
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Donald J. DeCoste
Chapter14: Liquids And Solids
Section: Chapter Questions
Problem 69AP: Describe, on both a microscopic and a macroscopic basis, what happens to a sample of water as it is...
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Answer letter a and b pls. 

4. Water is less dense as a solid than as a liquid.
A. Why can solid ice float on liquid water?
B. When a lake freezes, how does the density of water prevent all of the living organisms in the lake
from freezing as well?
Transcribed Image Text:4. Water is less dense as a solid than as a liquid. A. Why can solid ice float on liquid water? B. When a lake freezes, how does the density of water prevent all of the living organisms in the lake from freezing as well?
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