Magnetic and Non-magnetic Materials

📚 Key Concepts

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🔹 Magnetic Materials

Materials that are attracted to magnets are called magnetic materials.

Examples of Magnetic Materials:

  • Iron: Most common magnetic material
  • Nickel: Magnetic metal, used in coins
  • Cobalt: Strong magnetic properties
  • Steel: Contains iron, so it’s magnetic
  • Iron alloys: Combinations containing iron

Properties:

  • Get attracted to magnets
  • Can be magnetized themselves
  • Lose magnetism when heated strongly
  • Used to make artificial magnets

🔹 Non-magnetic Materials

Materials that are NOT attracted to magnets are called non-magnetic materials.

Examples of Non-magnetic Materials:

  • Wood: Completely non-magnetic
  • Plastic: No magnetic attraction
  • Glass: Transparent and non-magnetic
  • Paper: Made from plant fibers
  • Rubber: Elastic but non-magnetic
  • Aluminum: Light metal, non-magnetic
  • Copper: Good conductor but non-magnetic
  • Gold: Precious metal, non-magnetic
  • Silver: Valuable but non-magnetic

Testing Materials: To test if a material is magnetic, bring it near a strong magnet. If it’s attracted, it’s magnetic; if not, it’s non-magnetic.

🔹 Real-life Applications

Uses of Magnetic Materials:

  • Construction: Steel beams and rods
  • Transportation: Car bodies, train tracks
  • Electronics: Computer hard drives
  • Medical: MRI machines use magnetic properties

Uses of Non-magnetic Materials:

  • Packaging: Plastic containers, glass bottles
  • Construction: Wooden furniture, glass windows
  • Electronics: Plastic casings protect circuits
  • Clothing: Cotton, polyester fabrics