science

​** Chemistry **



1. carbon - c, 6, lead in pencils. 2. neon - ne, 10, flourescent light-bulbs. 3. copper - cu, 29, wires & pots. 4. iron - fe, 26, common form steel. 5. silver - ag, 47, jewelery. 6. oxygen - o2, 8, we need to breathe. 7. gold - au, 79, used as currency & in jewelery. 8. helium - he, 2, used in balloons. 9. lithium - li, 3, used in batteries. 10. mercury - hg, 80, used in light-bulbs & thermometers.

= Water Cycle =