Were being asked to identify the phase change(s) observed from the initial to the final frame.
Recall that at standard room temperature (25 ºC) and pressure (1 atmosphere), the elements can exist under 3 states of matter.
• Solids: Maintain a fixed shape and volume.
• Liquids: Conform to the shape of a container, but not the volume.
• Gases: Assume both the shape and volume of a container.
In the reactant frame on the left, the red and blue molecules adopt the shape of the container. In the product frame on the right, the blue molecules adopt the shape of the container, and the red molecules have a definite volume but an indefinite shape.
Which of the following outline the phase change(s) observed from the initial to the final frame? ( choose one or more)
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