METALLOIDS: B (Non-Metal); Al Ga In Tl (Poor Metals)

Question 1

Description: Boron (B)

Answer 1

Hard Black Solid

Question 2

Uses and Occurrences: Boron (B)

Answer 2

1. Fertilizer

2. Borax Soap
3. Heat-resistant Borosilicate Glass (Pyrex)
4. Semiconductors
5. Sports Equipment (Golf Clubs, Skis, Tennis Rackets)
6. Stiff Fibers

Question 3

Description: Aluminum (Al)

Answer 3

Lightweight Non-corroding Metal

Question 4

Uses and Occurrences: Aluminum (Al)

Answer 4

1. Bikes
2. Cars
3. Planes

4. Cans
5. Clay
6. Ceramics
7. Common Metal
8. Corundum
9. Feldspar
10. Foil
11. Gems
12. Granite
13. Kitchenware
14. Machinery

Question 5

Description: Gallium (Ga)

Answer 5

1. Soft Metal
2. Melts on a Hot Day

Question 6

Uses and Occurrences: Gallium (Ga)

Answer 6

1. Light-Emitting Diodes (LEDs) ; (Gallium Arsenide (GaAs) is used in the manufacture of LEDs.)
2. Semiconductors
3. Signal Lights
4. Tiny Lasers

Question 7

Description: Indium (In)

Answer 7

Soft Metal

Question 8

Uses and Occurrences: Indium (In)

Answer 8

1. Semiconductors

2. Diodes
3. Liquid Crystal Display (LCD)
4. Glass Coatings
5. Glass Seals
6. Photocells
7. Solders

Question 9

Description: Thallium (Tl)

Answer 9

1. Soft Metal

2. Toxic

Question 10

Uses and Occurrences: Thallium (Tl)

Answer 10

1. Photocells

2. Low-Melting-Point Mercury Alloys
3. Low-Temperature Thermometers
4. Undersea Lamps