Different stations will be used to explore the process of weathering.
Station 1. Compare the effects of an acid and water to some samples of rock. Record the observations before and after 24 hours.
Effects of water and acid on rock.
Volume of water and acid used ______________________________________
Type of rocks ______________________________________________________
Observations
Before 24 hours II After 24 hours
Rocks on water:
Rocks on acid:
Conclusion
Station 1. Compare the effects of an acid and water to some samples of rock. Record the observations before and after 24 hours.
Effects of water and acid on rock.
Volume of water and acid used ______________________________________
Type of rocks ______________________________________________________
Observations
Before 24 hours II After 24 hours
Rocks on water:
Rocks on acid:
Conclusion
Answers & Comments
Experiment: Effects of water and acid on rock
Volume of water and acid used: 100 ml
Type of rocks: Limestone, granite, sandstone
Observations:
Before 24 hours:
- Limestone: Smooth surface, no visible cracks or discoloration
- Granite: Rough surface, no visible cracks or discoloration
- Sandstone: Rough surface with visible cracks and discoloration
After 24 hours:
- Limestone on water: No visible changes
- Limestone on acid: Surface has become rough with visible pits and holes
- Granite on water: No visible changes
- Granite on acid: Surface has become slightly rougher with small pits and holes
- Sandstone on water: No visible changes
- Sandstone on acid: Surface has become significantly rougher with visible pits and holes, and the discoloration has become more pronounced
Conclusion:
Based on our observations, we can conclude that acid has a greater effect on the weathering of rocks compared to water alone. The limestone and granite showed minimal change when exposed to water, but when exposed to acid, their surfaces became rough with visible pits and holes. The sandstone showed significant changes when exposed to acid, with its surface becoming rougher and showing pronounced discoloration. This suggests that acid rain or acid groundwater can cause significant weathering of certain types of rocks over time.
Hope it helps:))