Identification of Substances
kit #83
In this kit, students are asked to identify common metallic and non-metallic ions in zinc, cadmium, antimony, barium, sulfate, sulfide, sulfite, and carbonate. Through the identification process, students learn that each substance has distinctive properties. As a closing activity, students conduct chemical tests on four unknown substances. All test results are safe, clear, colorful, and unmistakable!
Identification of Substances is an excellent complement to both Qualitative Analysis Chromatography (Lab-Aids kit #18) and Identification of Chemical Reactions (Lab-Aids kit # 84).
- A thorough introduction to acid and bases
- Produce hydrogen by reacting acids with metals
- Collect and safely test hydrogen
- Produce carbon dioxide by reacting carbonates with acids
- Collect and test carbon dioxide
- Observe effects of acids and bases on indicator dyes
- Measure concentration of acids by titration of an "unknown"
- Perform a neutralization experiment
Content List in Identification of Substances is as follows:
| Quantity | Description |
|---|---|
| 12 | Chemplates with spatulas and gas collector caps, LAB-AIDS® |
| 12 | Gas delivery tubes |
| 3 | Hydrochloric Acid, 6M, Drop control bottle |
| 3 | Limewater, saturated, Drop control bottle |
| 3 | Sodium sulfide Solution, Drop control bottle |
| 1 | Antimony Chloride Solution, Drop control bottle |
| 1 | Barium Chloride Solution, Drop control bottle |
| 1 | Cadmium Nitrate Solution, Drop control bottle |
| 1 | Lead Acetate Solution, Drop control bottle |
| 1 | Potassium Permanganate Solution, Drop control bottle |
| 1 | Sodium Sulfate Solution, Drop control bottle |
| 1 | Sodium Sulfite Solution, Drop control bottle |
| 1 | Zinc Nitrate Solution, Drop control bottle |
| 1 | Calcium carbonate chips, Vial |
| 1 | Absorbent paper, Package |
| 1 | Unknown #1, Vial |
| 1 | Unknown #2, Vial |
| 1 | Unknown #3, Vial |
| 1 | Unknown #4, Vial |
| 1 | Teacher’s Guide with MSDS |
| 50 | Student Worksheets and Guides |
- Number of students
- 50
- Number of groups
- Maximum 12 groups per period
To complete this kit requires one ~50-minute class period.
