Mohs Hardness Kit - Includes Materials for 15 Students

• This earth science kit demonstrates the Mohs scale of relative hardness
• Students will perform scratch tests to determine whether the given samples are harder or softer than others
• Real rock samples allow students the chance to identify minerals based on their hardness
• Kit contains enough material for 15 groups of students
• Includes teacher's guide, student study guide copymasters, and material safety data sheets (MSDS)

The Mohs relative hardness scale forms the basis of mineral hardness testing. Minerals are graded on an arbitrary 1-10 scale, with each number relating to a mineral standard. This kit introduces students to the Mohs scale and allows them to test the hardness of four mineral samples, as well as giving them the tools to test mineral hardness of local samples. This kit works well as an introduction into mineral physical properties and identification. Providing enough materials for 15 groups of students, each kit also includes a teacher's guide, student study guide copymasters, and material safety data sheets (MSDS). This kit aligns with next Generation Science Standard MS-PS1-3, relating to structure and function.

What's in the box?

• 1 bag "Sample A", 15 pieces
• 1 bag "Sample B", 15 pieces
• 1 bag "Sample C", 15 pieces
• 1 bag "Sample D", 15 pieces
• 35 pieces of aluminum foil
• 35 scratch plates
• 35 streak plates
• Teacher's manual, student study guide copymasters, and material safety data sheets (MSDS)

⚠ WARNING
WARNING: This product can expose you to chemicals including Respirable crystalline silica, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.