Magnets and Their Characteristics

1. Materials

1.1. Magnetic

1.1.1. Steel

1.1.2. Iron

1.1.3. Nickel

1.1.4. Cobalt

1.2. Non-magnetic

1.2.1. Non-metals

1.2.1.1. Wood

1.2.1.2. Plastic

1.2.1.3. Rubber

1.2.1.4. Ceramic

1.2.1.5. Fabric

1.2.1.6. Glass

1.2.2. Metals

1.2.2.1. Gold

1.2.2.2. Silver

1.2.2.3. Sodium

1.2.2.4. Potassium

1.2.2.5. Indium

1.2.2.6. Lithium

1.2.2.7. Mercury

1.2.2.8. Calcium

1.2.2.9. Lead

1.2.2.10. Magnesium

2. Interaction between magnets

2.1. Like poles

2.1.1. Repel

2.2. Unlike poles

2.2.1. Attract

3. Freely-suspended magnet

3.1. Rest in a North-South direction

4. Different

4.1. Shape

4.1.1. Ring magnet

4.1.2. U-shaped magnet

4.1.3. Horseshoe magnet

4.1.4. Rod-shaped magnet

4.1.5. Button Magnet

4.1.6. Bar Magnet

4.2. Size

4.2.1. The strength of a magnet does not depend on its size

5. 2 poles

5.1. North pole

5.2. South pole

6. Uses

6.1. To keep refrigerator doors closed

6.2. To hold notes on a whiteboard

6.3. To find directions

6.4. Magnetic door stoppers