a. U, a radioactive element
b. Cu, a reddish metal used in electrical wiring
c. H, a very light, explosive gas
d. O, a gas which makes up one-fifth the earth's atmosphere
e. Fe, a metal used in construction which rusts easily
f. Hg, a heavy silvery metal which is liquid at room temperature
g. Cl, a greenish yellow gas used to purify water
h. He, a very light, inert gas
i. Ag, a heavy precious metal
j. N, a gas which makes up four-fifths of the earth's atmosphere
k. Ti, a very strong, light metal, which doesn't corrode easily
l. Pb, a soft, heavy metal used in water pipes
m. Ne, an inert gas which is commonly used in lights
n. C, a non-metallic element which is the basis of organic compounds
o. Al, a very light metal
1. aluminum
2. carbon
3. chlorine
4. copper
5. helium
6. hydrogen
7. iron
8. lead
9. mercury
10. neon
11. nitrogen
12. oxygen
13. silver
14. titanium
15. uranium
Match