Your text is mostly clear, but there are a few areas where minor adjustments can improve its clarity and fluidity. Here are the corrections:
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"but" in the second sentence: The conjunction "but" is used improperly as it interrupts the flow of the comparison. It could be replaced with a semicolon or restructured for clarity.
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"are closer together" vs. "are less freely": While the original points are correct, making sure the parallel structure in listing differences and similarities would improve readability.
Here’s the revised text with corrections applied:
"A similarity between particles in liquid water and particles in steam at 100ºC is that both are made of water molecules. A difference between particles in liquid water and particles in steam at 100ºC is that the particles in the steam can move freely and are farther apart; however, the particles in liquid water are closer together and move less freely."
Corrections List:
- Replaced "but" with "however" and used a semicolon before it for better flow.
- Kept the structure parallel in the statement about particles in both states.
Let me know if you need any further assistance!