How do I identify an LED?

Related questions

1. Would you have led or lead?
2. Why is a resistor needed for an LED?
3. Do LED light strips get hot?
4. Should I wire LEDs in series or parallel?
5. Do you need a resistor for LED headlights?
6. Do resistors limit current?
7. What is the purpose of an LED?
8. What is an LEDs?
9. Why do you need a resistor with an LED?
10. Is the anode oxidized or reduced?

Tags

1. #difficult
2. #anode
3. #longer
4. #bottom
5. #other
6. #apparent
7. #cathode
8. #terminals
9. #clues
10. #carefully
11. #called