Six mystery liquids were recovered from the Alpine Ridge supply shed and health center. One of them is the liquid from Devon's recovery-mix bottle. Your task: run a series of physical and chemical tests on each vial to identify all six substances. Build your data table, then use the evidence to make your identification.
Click a vial to select it, then click the test buttons to run each test. Results will auto-populate in your data table.
Results fill in automatically as you run tests. Use this table to identify each substance.
| Vial | Color | Conductivity | pH | Phenolphthalein | + Vinegar | Density (g/mL) |
|---|
Drag each vial label to the correct substance name. Use your data table as evidence!
| Vial | Identity | Key Evidence |
|---|
1. Which property was MOST useful for distinguishing the saturated Epsom salt solution from distilled water? Explain why.
2. Vinegar and baking soda both reacted visibly when combined. Is this reaction a physical or chemical change? How do you know?
3. Phenolphthalein turned pink with one substance. What does this tell you about that substance? Is this a physical or chemical property?
4. The hot cocoa sugar mix and distilled water both showed zero conductivity. How could you distinguish between them using only physical properties?