Notes

• What is a compound?

  A substance with multiple chemically bonded elements
• What is a mixture?

  A physical combination of multiple substances
• What is a mineral within a rock defined as?

  A specific compound
• What is a grain in the context of rocks?

  Each individual mineral within a rock
• What is a crystal?

  A solid piece of mineral with pattern
• How do rounded grains differ from interlocking grains?

  Rounded grains are smooth and separate
• How do interlocking grains fit together?

  They fit tightly
• How does the strength of a rock relate to its grain structure?

  Interlocking grains make a rock stronger
• What is the impact of porosity on a rock?

  More porous rocks allow more water in
• What does the permeability of a rock determine?

  How easily water passes through it
• What property does the hardness of a rock indicate?

  Its resistance to scratching and abrasion
• What does a harder rock allow?

  Maintaining its shape and structure over time
• What is weathering?

  Breaking down rocks into smaller pieces
• What are the types of weathering?

  Physical, chemical, or biological