Question

1. Place several teaspoons of sugar in a small beaker half full of water, and stir until the water is clear.

2. Pour some of the solution into a dish. Set the dish on a shelf or a windowsill. Observe the dish for a day or two. Record what you observe.



Compile a scientific report from your hypotheses, observations, data, inferences, and conclusions. Be sure to answer the questions below in your summary and include your personal findings.

What did you observe after the solution set in the dish for a day or two?

What kind of change (physical or chemical) occurred in this experiment?

How do you know the kind of change?

What happened to the sugar?

Name another mixture that could be separated in this way.

What did you find out from this experiment? Be thoughtful in your answer.

Answer 1

In order to answer these questions and write the report you’ll need to do the experiment.

Some information that may be helpful: after sitting for a while, the water in the solution will evaporate and leave the sugar behind. Did the sugar change any chemical properties or undergo a chemical reaction? If yes it’s a chemical change, if not it’s a physical change.

For other solutions that can be separated through evaporation, think about other substances that will dissolve but not react with water.