What to do
- Open the sim. Pick a solute and a solvent.
- Press Add and watch the particles for 20 seconds.
- Record what you see. Try all six pairs.
Controls
Data table
| Pair | Dissolves? | What the particles did |
|---|
Copy your table onto your worksheet. No device? Use the Data Card on the Teacher Prep page. Fill in the table from the card, then answer the questions.
Check yourself
What did water do to the Na⁺ and Cl⁻ ions?
It surrounded each ion and pulled it away from the crystal.
Which pairs mixed?
Salt in water, sugar in water, oil in hexane.
Write a rule using the words polar and nonpolar.
Like dissolves like: polar with polar, nonpolar with nonpolar.
Try each question first. Then tap it to check.