Saturations

Imagine dissolving sugar in water, but there's a limit to how much sugar will dissolve.

To understand this, let's do an experiment.

Take a beaker and fill it with 1 liter of water at 20 °C. Add 1000 grams of sugar and stir. It dissolves completely.

Add another 1000 grams of sugar and stir. The sugar still dissolves. Now, add another 500 grams of sugar and stir. This time, the sugar remains undissolved and starts settling at the bottom.

This is called the saturation point, which means no more sugar can dissolve in this solution.

So, we can say that the maximum amount of sugar 1 liter of water at 20 °C can dissolve is up to 2000 grams.

We call this solution saturated, which means it holds the maximum amount of dissolved solute.

Next, heat the beaker. The undissolved sugar at the bottom begins to dissolve.

This shows that when the temperature rises above 20°C, the solution can dissolve more, making it unsaturated again.

An unsaturated solution is a solution where more solute can be dissolved.