Name: ___________________________________________
Date: ___________
Period: _______
CH.11-Section 11.1
Worksheet #2
WORTH: 30 points
Part 1
Writing word and skeleton equations when given sentence descriptions of
chemical reactions.
Write all answers on this sheet so that you have the original description as a
reference. Use your reference sheets for ion symbols and charges, for nomenclature,
for names and formulas of acids. All acids must have (aq) written after the
chemical formula. All chemical formulas written must be electrically
balanced! Write the HOFBrINCl element symbols correctly. Read each
sentence carefully: pay attention to what reacts and what is formed.
1. Aqueous ammonium chloride reacts with aqueous sodium hydroxide to
form ammonia gas, liquid water, and aqueous sodium chloride.
word eqtn:
skeleton eqtn:
2. Aqueous sodium phosphate and liquid water are formed when aqueous
sodium hydroxide reacts with phosphoric acid.
word eqtn:
skeleton eqtn:
1
Name: ___________________________________________
Date: ___________
Period: _______
3. When heated, solid carbon reacts with oxygen gas to form carbon
monoxide gas.
word eqtn:
skeleton eqtn:
4. Solid carbon reacts with oxygen gas to form carbon dioxide gas.
word eqtn:
skeleton eqtn:
5. Solid sodium reacts with liquid bromine to form solid sodium bromide.
word eqtn:
skeleton eqtn:
2
Name: ___________________________________________
Date: ___________
Period: _______
6. When heated, solid potassium chlorate yields solid potassium chloride
and oxygen gas.
word eqtn:
skeleton eqtn:
7. When heated, solid calcium hydrogen carbonate yields solid calcium
carbonate, carbon dioxide gas, and water vapor.
word eqtn:
skeleton eqtn:
8. Ethane gas, C2H6(g), reacts with oxygen gas to form carbon dioxide gas
and water vapor.
word eqtn:
skeleton eqtn:
3
Name: ___________________________________________
Date: ___________
Period: _______
9. Aqueous copper(II) nitrate reacts with aqueous sodium iodide to form
solid copper(I) iodide, aqueous iodine, and aqueous sodium nitrate.
word eqtn:
skeleton eqtn:
Part 2
Writing skeleton equations (including the physical state!) when given word
equations. If one of the substances is an element, you must write the correct
element symbol; be careful with elements that form diatomic molecules when
they are not combined with other elements!)
Write skeleton equations for each of the following word equations:
10. Potassium chlorate(s)  potassium chloride(s) + oxygen(g)
11. Lead(IV) oxide(s)  lead(II) oxide(s) + oxygen(g)
12. Aluminum(s) + lead(II) nitrate(aq)  aluminum nitrate(aq) +
lead(s)
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Name: ___________________________________________
Date: ___________
Period: _______
13. Potassium(s) + water(l)  potassium hydroxide(aq) + hydrogen(g)
_______________
14. Sodium sulfite(aq) + hydrochloric acid  sodium chloride(aq) +
water(l) + sulfur dioxide(s)
15. Lead(II) nitrate(aq) + potassium sulfide(aq)  potassium nitrate(aq)
+ lead(II) sulfide(s)
16. Calcium oxide(s) + diphosphorus pentoxide(s)  calcium
phosphate(s)
17. Potassium carbonate(aq) + barium chloride(aq)  potassium
chloride(aq) + barium carbonate(s)
18. Magnesium nitrate(aq) + sulfuric acid  magnesium sulfate(aq) +
nitric acid
19. Aluminum chloride(aq) + sulfuric acid  aluminum sulfate(aq) +
hydrogen chloride(g)
5
Name: ___________________________________________
Date: ___________
Period: _______
20. Ammonia (g) + oxygen(g)  nitrogen monoxide(g) + water(g)
21. Magnesium(s) + oxygen(g)  magnesium oxide(s)
6