Sucrose and naphthalene are both organic molecules. Did you find significant differences in their solubilities

Naphtalene is very unlikely to get dissolved in water as it is nonpolar.

Sucrose is very likely to get dissolved in water as it is polar at the oxygen-to-hydrogen bonds.

Explanation:

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In this case, naphtalene (C₁₀H₈) is constituted by both carbon-to-carbon and carbon-to-hydrogen bonds only as it is an aromatic hydrocarbon which is highly nonpolar due to the low-polarity of the C-H bond, therefore, it is very unlikely to get dissolved in water. On the other hand, sucrose (C₁₂H₂₂O₁₁) has oxygen-to-hydrogen bonds which are highly polar, for that reason, it is able to get dissolved in water via hydrogen bonds.

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if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but