Why Is Ice Less Dense Than Water

question 58

Multiple Choice

Why is ice less dense than water?

• A) When water freezes, the molecules arrange into a crystal form in which they are farther apart than in liquid water.
• B) As a solid, ice is actually denser than water, but will still float due to the high surface tension of water.
• C) Water molecules lose one of their hydrogen atoms when they form ice, making the solid form less dense than the liquid form.
• D) As water freezes, it forms cubic crystals made only of eight atoms. These atoms weigh less in ice than in water.

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Definitions:

Sexual Orientation

A person's sexual identity in relation to the gender to which they are attracted.

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Male siblings who are older than their brothers or sisters, often having a significant influence on their younger siblings' development and socialization.

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A region of the brain below the thalamus that coordinates both the autonomic nervous system and the activity of the pituitary, controlling body temperature, thirst, hunger, and other homeostatic systems, and involved in sleep and emotional activity.

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An enduring pattern of emotional, romantic, or sexual attractions to men, women, both sexes, neither sex, or another sex, and the sense of identity based on those attractions.