Column A 1. Hydrogen gas (H2) : Hydrogen gas (H2) 2. Calcium (Ca): Calcium (Ca) 3. The glass flask that the reaction took place in.: The glass flask that the reaction took place in. 4. Calcium Hydroxide (Ca(OH)2) : Calcium Hydroxide (Ca(OH)2) 5. Water (H2O) : Water (H2O) 6. The plastic clamp that is holding the mouth of the flask.: The plastic clamp that is holding the mouth of the flask. Column B a.Surroundings b.System
Column A Column B
1. Hydrogen gas (H2) b. System
2. Calcium (Ca) a. Surroundings
3. The glass flask a. Surroundings
4. Calcium Hydroxide b. System
(Ca(OH)2)
5. Water (H2O) b. System
6. Plastic clamp a. Surroundings