Translate each of the following chemical equations into written descriptions. Use the written
descriptions on “Writing Chemical Equations” as models of how to describe chemical
equations. Do NOT write every sentence in the same manner- mix it up!
1. P (s) + O
2
(g)
→
P
2
O
5
(s)
Solid phosphorus reacts with gaseous oxygen to produce solid diphosphorus
pentaoxide.
2. FeS (aq) + HCl (aq)
→
H
2
S (g) + FeCl
2
(aq)
Solutions of iron(II) sulfide and hydrochloric acid react to form gaseous
hydrosulfuric acid and a solution of iron(II) chloride.
3. CaCl
2
(aq) + HNO
3
(aq)
→
Ca(NO
3
)
2
(aq) + HCl (aq)
Solutions of calcium hydroxide and nitric acid react to form solutions of calcium
nitrate and hydrochloric acid. (OR DO THEY? Make a note to ask about this in
class!)
4. CH
3
OH (l) + O
2
(g)
→
CO
2
(g) + H
2
O (g)
(methanol)
Methanol burns in oxygen to produce carbon dioxide gas and water vapor. (HEY!
Did you just get the answers to some pre-assessment questions about burning
things?)
5. Na
2
CO
3
(aq) + CaCl
2
(aq)
→
NaCl (aq) + CaCO
3
↓
Solutions of sodium carbonate and calcium chloride react to form aqueous sodium
chloride and a calcium carbonate precipitate.
