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In Ms. Baker’s science class, students filled two glass bottles with equal amounts of water and attached a balloon to the top of each bottle. The bottle on the right is heated on a hot plate to 80°C (176°F), while the bottle on the left is kept at room temperature, 21°C (70°F). After several minutes, the students observe that the balloon on the right inflates. (SC.5.P.9.1)


Which statement best explains the students’ observation?




The heat slows down a chemical change, producing the gas to fill in the balloon.


The heat speeds up a chemical change, producing a new substance.


The heat slows down a physical change, causing the water level to decrease.


The heat speeds up a physical change, causing the liquid to turn into a gas.

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Sagot :

SakusaSimpidn

Answer:

D. The heat speeds up a physical change, causing the liquid to turn into a gas.

Explanation:

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