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Can you see water molecules? Are water molecules moving?

Answer 1

When I turn on the tap and fill a glass, do I not see water molecules? Likewise when I boil the kettle, do we not see water molecules condensing?

Of course we see it in the bulk phase...but the bulk phase certainly consists of water molecules.... As to whether we can visualize individual water molecules the answer is no. A water molecule has an actual size of less that #3xx10^-10*m# along its longest axis, which is well below our ability to resolve...

Additionally, water molecules move, even when they are condensed.

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Answer 2

Cooper Adams

No, you cannot see individual water molecules with the naked eye. However, you can observe the collective movement of water molecules, such as in waves or flowing water. Yes, water molecules are constantly in motion due to their kinetic energy, even in a liquid state.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.