Question

In terms of atoms, ions, and molecules that comprise substances, why are some materials solids, some liquids, and still other gases at 25 C?

Answer 1

Answer:

At 25°C, solid substances have very strong intermolecular forces of attraction between their atoms and molecules by means of metallic bonds, covalent bonds or ionic bonds. Thus they form rigid structure. Liquid substances have intermediate intermolecular  forces of attraction between their atoms and molecules and thus can flow from one place to another. Gaseous substances have very weak intermolecular forces of attraction between their atoms and molecules, thus they can move in a random motion and can expand easily.

The force of attraction between molecules is weaker than within molecules, so molecules can be separated.

Answer 2

Answer:

Originally Answered: In terms of atoms, ions, and molecules that comprise substances, why are some materials solids, some liquids and still other gases at 25 °C? The force of attraction between molecules is weaker than within molecules, so molecules can be separated

Explanation:

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