Read the passage about Ivory soap.
Ivory soap floats in water because it is less dense than water. When Ivory soap is put into a microwave oven and cooked for 25 seconds, it will expand and fill up the microwave.
What is the most likely reason the Ivory soap expands when heated?
A.
The particles in the Ivory soap expand when the temperature increases.
B.
The increase in temperature causes a chemical reaction to make more soap.
C.
The air spaces in the soap heat up and cause the soap particles to increase in number.
D.
The volume of gas in the spaces of the Ivory soap expands when the temperature increases.
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The most likely reason the Ivory soap expands when heated is:
D. The volume of gas in the spaces of the Ivory soap expands when the temperature increases.
This option best explains the phenomenon observed when the soap is heated in the microwave, as the gas in the air pockets within the soap expands due to the increase in temperature, causing the soap to puff up.
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