Column A

1.
Rubidium metal (Rb):

2.
Water (H2O)
3.
The plastic container that reaction is taking place in.
4.
The brick wall
5.
The string and the hammer
6.
Rubidium Hydroxide (RbOH):
7.
Hydrogen gas (H2)
match with
Column B
a.Surroundings
b.System

1 answer

1. b. System
- Rubidium metal (Rb) is a part of the system as it is undergoing a reaction.

2. b. System
- Water (H2O) is a part of the system as it is involved in the reaction.

3. a. Surroundings
- The plastic container that the reaction is taking place in is not directly involved in the reaction and is considered part of the surroundings.

4. a. Surroundings
- The brick wall is not directly involved in the reaction and is considered part of the surroundings.

5. a. Surroundings
- The string and the hammer are not directly involved in the reaction and are considered part of the surroundings.

6. b. System
- Rubidium Hydroxide (RbOH) is a product of the reaction and is considered part of the system.

7. b. System
- Hydrogen gas (H2) is a product of the reaction and is considered part of the system.