1) Added to ordinary table salt to control thyroid trouble
2) An element used in nuclear reactors for energy
3) An element named after the planet Pluto_ stays radioactive for millions of years, dangerous
4) In honour of Pierre and Marie Curie, pioneers in the field of radioactivity
5) The lead in Lead pencils
6) Bronze is composed of copper and this element
7) The center electrode post of ordinary flashlight batteries
8) the metal plates in car batteries
9) Used in the making of atomic clocks that lose one second every 300 years
10) Used in the making of supersonic airplane wings and artifical joints for bones, modern submarine hulls
11) Used to make high speed drills and abrasives
12) used to make light sensitive photo cells for camera, electric eyes and fire alarms
13) Used extensively in making transistors and chips
14) Used in poison to kill rats and insects
15) Used as a catalyst in catalic converters in car exhaust system to get rid of pollution
16) Used in the Goodyear blimp and other dirigibles
2) An element used in nuclear reactors for energy
3) An element named after the planet Pluto_ stays radioactive for millions of years, dangerous
4) In honour of Pierre and Marie Curie, pioneers in the field of radioactivity
5) The lead in Lead pencils
6) Bronze is composed of copper and this element
7) The center electrode post of ordinary flashlight batteries
8) the metal plates in car batteries
9) Used in the making of atomic clocks that lose one second every 300 years
10) Used in the making of supersonic airplane wings and artifical joints for bones, modern submarine hulls
11) Used to make high speed drills and abrasives
12) used to make light sensitive photo cells for camera, electric eyes and fire alarms
13) Used extensively in making transistors and chips
14) Used in poison to kill rats and insects
15) Used as a catalyst in catalic converters in car exhaust system to get rid of pollution
16) Used in the Goodyear blimp and other dirigibles