How much will dissolve?

Measure 100 ml of water into a clean beaker. Weigh out 100 g of clean salt (NaCl). Add the salt to the water a small amount at a time, stirring with a glass rod to dissolve it, and do not add the next amount until the last one has completely dissolved. When an amount will not dissolve, stop adding and weigh what is left. What mass of salt, roughly, dissolved in the 100 ml of water?

Weigh out 10 g of calcium hydroxide. Take 100 ml of water in a beaker and add the calcium hydroxide a very little at a time, stirring with a glass rod. When what you add no longer dissolves, add no more and weigh what is left. What mass dissolved in the 100 g of water?

Both stopped. Neither solute went on dissolving for ever. And the mass that dissolved was not the same for the two — in equal volumes of water, some solutes dissolve in large amounts and others in very small ones.

A solution holding as much of that solute as it can at that temperature is said to be saturated with it. Add more and the extra simply sits at the bottom undissolved.

Grade 10 used saturated of a fatty acid, meaning its carbon chain has no double bonds. That is a different sense entirely. A saturated solution is about how much has dissolved, not about bonds.