Name: ______
Types of Chemical Reactions Worksheet
Writing Formulas
In order to complete chemical reactions, you must be able to write formulas for ionic compounds. Remember, to write the formula for ionic compounds all you have to do is criss-cross the numerical value of the charges into subscripts for the elements. Remember, polyatomic ions must be kept in brackets if there are more than one of them!
Ex) Ca+2 Cl –1 criss-crosses to make the formula CaCl2 (we don’t write 1’s as subscripts)
Ex) Al+3 SO4-2 makes Al2(SO4)3
Write formulas for the following ionic compounds (salts)
1. magnesium fluoride ______6. iron (II) sulfate ______
2. calcium nitride ______7. barium nitrate ______
3. aluminum iodide ______8. potassium phosphate ______
4. sodium chloride ______9. cobalt (II) chlorate ______
5. copper (I) sulfide ______10. zinc carbonate ______
Write formulas for the following basic oxides (metal oxides)
1. lithium oxide ______6. iron (III) oxide ______
2. magnesium oxide ______7. silver oxide ______
3. barium oxide ______8. nickel (II) oxide ______
4. potassium oxide ______9. tin (IV) oxide ______
5. cesium oxide ______10. copper (II) oxide ______
Write formulas for the following bases (end in hydroxide)
1. lithium hydroxide ______6. lead (II) hydroxide ______
2. barium hydroxide ______7. zinc hydroxide ______
3. aluminum hydroxide ______8. calcium hydroxide ______
4. potassium hydroxide ______9. copper (I) hydroxide ______
5. copper (II) hydroxide ______10. magnesium hydroxide ______
Write formulas for the following acids (start with hydrogen!)
1. sulfuric acid ______6. carbonous acid ______
2. hydrosulfuric acid ______7. sulfurous acid ______
3. carbonic acid ______8. nitrous acid ______
4. nitric acid ______9. phosphorous acid ______
5. hydrofluoric acid ______10. hydroiodic acid ______
Types of Reactions
There are 5 major types of reactions simplified by the following equations:
· Synthesis/Combination A + B à AB
· Decomposition AB à A + B
· Combustion ? + O2 à ?
· Single Replacement X + AB à XB + A or Y + AB à AY + B
· Double Replacement XY + AB à XB + AY
Classify each of the following reactions:
1. Zn + Cl2 à ZnCl2
2. 2 H2S + 3 O2 à 2 SO2 + 2 H2O
3. Cu + 2 AgNO3 à Cu(NO3)2 + 2 Ag
4. Mg(OH)2 à MgO + H2O
5. CaCl2 + Na2SO4 à CaSO4 + 2 NaCl
6. CaO + H2O à Ca(OH)2
7. Pb + 4 HCl à PbCl4 + 2 H2
8. Li2O + CO2 à LiCO3
9. SO2 + H2O à H2SO3
10. MgCO3 à MgO + CO2
Classify each of the following reactions when only the reactants are given and fill in the products and balance:
1. Mg + N2 à
2. C2H6 + O2 à
3. Zn + CuCl2 à
4. Ca + H2O à
5. AgNO3 + NaI à
6. Fe(NO3)3 + LiOH à
7. MgCO3 à
8. SO2 + H2O à
9. HI à
10. H2SO4 + LiOH à
Finishing Reactions
Complete the following by identifying the type of reaction AND properly writing formulas: (HINT: double check to make sure the single replacements will work!)
1. Cobalt (III) hydroxide à
2. butane + oxygen à
3. AgNO3 (aq) + Fe2S3 (aq) à
4. lead (II) sulfate à
5. Fe + S8 à
(use iron (III) )
6. aluminum chlorate à
7. C6H12 + O2 à
8. K2CO3 (aq) + HCl (aq) à
9. ethane burning à
10. lead (II) + tin(II)nitrate à
11. sulfuric acid à
12. Ca + O2 à
13. zinc + sulfuric acid à
14. CO2 + H2O à
15. Cl2 + LiBr à
16. calcium chloride + potassium hydroxide à
17. K2O + H2O à
18. barium hydroxide à
19. Al + Ag2O à
20. MgO + CO2 à
21. lithium hydroxide + sulfuric acid à
22. magnesium + nitric acid à
23. Potassium + water à
24. KCl à
25. CuI + F2 à
26. Na2SO4 (aq) + Ba(NO3)2 (aq) à
27. H3PO4 (aq) + NaOH (aq) à
28. BeO + H2O à
29. zinc + oxygen à
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