In an experiment, a scientist adds one crystal of solute to a solution and large amount of solute precipitates out of the solution. Before the crystal was added, the solution was probably concentrated saturated unsaturated supersaturated

## Step 1<br />In this problem, we are given a scenario where a scientist adds one crystal of solute to a solution and a large amount of solute precipitates out of the solution. This indicates that the solution was not able to hold any more solute, which is a characteristic of a saturated solution.<br /><br />## Step 2<br />A saturated solution is defined as a solution in which no more solute can be dissolved at a given temperature. This is because the solution has reached its maximum capacity of solute that can be dissolved.<br /><br />## Step 3<br />When a crystal of solute is added to a saturated solution, the excess solute will precipitate out of the solution. This is because the solution is already saturated and cannot hold any more solute.<br /><br />## Step 4<br />The other options, such as concentrated, unsaturated, and supersaturated, do not fit the given scenario. A concentrated solution simply means that there is a large amount of solute in the solution, but it does not necessarily mean that the solution is saturated. An unsaturated solution can still dissolve more solute, and a supersaturated solution contains more solute than it can normally hold at a given temperature.