1. Therefore, the correct answer is A.
QUESTION:
Which of the pictorial representations best accounts for the conversion of water from liquid to steam?
Which of the pictorial representations shown here best accounts for the conversion of water from liquid to steam?
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Simple changes in physical state like melting, freezing, vaporization, or sublimination do not involve a chemical change.
When a liquid changes into a gas, such as water changing into steam, the molecules spread out. The molecules, themselves, remain unchanged.
Therefore, the correct answer is A.
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2. Video ID: © 2008, Project VALUE (Video Assessment Library for Undergraduate Education), Department of Physical Sciences Nicholls State University Author: Glenn V. Lo Narrator: Funded by Louisiana Board of Regents Contract No. LA-DL-SELECT-13-07/08