The answers to the clues below will have something in common.

1. Eloquent in speech
2. U.S. Mint offering
3. Companion of Dorothy Gale
4. What a tyrant rules with
5. Sales distinction in music
6. High tech mecca
7. Popular party favors
8. Good conductor of electricity
9. Color shade between sky and navy
10. You might wear one in a dentist's office
11. Old movie theater that charged five cents

Answers:

1. Silver-tongued
2. Gold coin
3. Tin Man
4. Iron fist
5. Platinum record
6. Silicon Valley
7. Helium balloons
8. Copper wire
9. Cobalt blue
10. Lead apron 
11. Nickelodeon  - - - First words (or first part) of answers are all elements.

Credit: Diane Epperson (#1-6)