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A change of state from solid to liquid, or liquid to gas, or directly solid to gas., all indicate an increase in entropy.

Also an increase in moles from reactants to products.

The Classic example being the thermal decomposition of calcium carbonate

CaCO3(s) ==Heat==> CaO(s) + CO2(g)

You have a gas liberated from a solid, so an increase in entropy.

You also have one mole reactant increasing to two

moles of product, so again an increase in entropy.

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Q: What would represent an increase in entropy?

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In a nutshell, yes. The water will go from a higher concentration to a lower concentration to increase the entropy of the lower concentration area. The increase in entropy of the lower concentration area would be greater than the loss of entropy of the higher concentration giving you a NET increase in total entropy.

At high temperature the entropy increase.

The entropy increases.

Reactions that increase the moles of gas will increase in entropy.

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At high temperature the entropy increase.

A gas typically increases the entropy much more than the increase in moles.

In a nutshell, yes. The water will go from a higher concentration to a lower concentration to increase the entropy of the lower concentration area. The increase in entropy of the lower concentration area would be greater than the loss of entropy of the higher concentration giving you a NET increase in total entropy.

At high temperature the entropy increase.

Yes. Diffusion will increase the entropy.

The entropy of the universe is increasing

The entropy increases.

Reactions that increase the moles of gas will increase in entropy.

No method is known by which the increase of entropy can be violated.

There is always an increase in the entropy of the universe.