read the passage about ivory soap.\n\nivory soap floats in water because it is less dense than water. when…
read the passage about ivory soap.\n\nivory 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.\n\nwhat is the most likely reason the ivory soap expands when heated?\n\na. the particles in the ivory soap expand when the temperature increases.\n\nb. the increase in temperature causes a chemical reaction to make more soap.\n\nc. the air spaces in the soap heat up and cause the soap particles to increase in number.\n\nd. the volume of gas in the spaces of the ivory soap expands when the temperature increases.
Answer
Brief Explanations:
Ivory soap is less dense than water because it contains tiny air/gas pockets. When heated in a microwave, the gas inside these pockets follows Charles's Law: gas volume increases with temperature at constant pressure. This expanded gas pushes the soap structure outward, causing the soap to expand. Option A is incorrect because individual particles do not expand with heat; it's the space between them or gas volume that changes. Option B is wrong because no chemical reaction creates more soap. Option C is incorrect as soap particles do not increase in number.
Answer:
D. The volume of gas in the spaces of the Ivory soap expands when the temperature increases.