Possible Clues:

• Is this what the old Greeks put in the kettle?
• One of over 100 on a table
• The chemist would be in his with one such
• Component, constituent
• Letters 12 to 14 spelled out on front of tiny building block
• Group in most natural surroundings
• Copper or nickel
• Honda model
• Chemical building-block
• Comfort zone briefly identified by Al or Mo, among others