Write formulas and other symbols for these substances. a. sulfur trioxide (SO3) gas
b. potassium nitrate (KNO3) dissolved in water
c. heat supplied to a chemical reaction
d. metallic copper
e. liquid mercury
f. zinc chloride (ZnCl2) as a catalyst

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

answer seismograph;