Chemical and Mechanical Erosion of Rocks

Item # 20-0102

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This lab activity kit is designed to facilitate the investigation of chemical and mechanical erosion processes on three rock samples using hydrochloric acid and agitation within sealed bottles. By shaking the bottles to simulate mechanical erosion, the sound and experience make students active participants in the effects of weathering and erosion.

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Additional Details

Experimenting with concepts will always provide more insight and understanding than receiving a lecture. Students will gain knowledge of the rock cycle and erosion by applying kinetic energy to the samples. Additionally, the lab includes a demonstration with plaster, a balloon, and freezing water to introduce the concept of frost weathering. This is a great opportunity to investigate as a class and discuss real world concepts and resultant environmental effects.
Students will note the different effects of physical and chemical erosion. They will be engaged with this physically active lab as they feel and hear the weathering action taking place in each bottle. While gaining knowledge of erosive force, the concept of conservation of mass will be applied as lab participants account for mass of samples before and after experiments.

Products being sold are not toys. They are for Educational / Laboratory use only. They are not for use by children 12 and under.

What’s Included

  • 350g Plaster of Paris
  • 30mL 1M Hydrochloric Acid
  • 1 Bag Limestone Pieces, 50 Pieces
  • 1 Bag Granite Pieces, 50 Pieces
  • 1 Bag Sandstone Pieces, 50 Pieces
  • 4 Plastic Cups
  • 50 Plastic Bottles with Caps
  • 2 Balloons
  • 20 Disposable Pipettes
  • 50 Plastic Trays


Disciplinary Core Ideas: PS1.B; ESS2.A; ESS2.D

Performance Expectations:MS-PS1-5; MS-ESS2-1; HS-ESS2-5

Cross Cutting Concepts: Energy and Matter; Stability and Change; Cause and Effect

Engineering Practices: Developing and Using Models; Planning and Carrying Out Investigations