Types Of Chemical Reactions Worksheet

Writing Chemical Reactions Formula

It is very critical to understand the various ionic compounds that make up a chemical formula. This is the initial basic step to writing a chemical formula. However, it is important to remember that when writing a formula for the various ionic compounds, all you need to do is carefully crisscross the numerical figures of the charges into the right subscripts for the elements. Additionally, it is vital to remember that all polyatomic ions are put in bracket whenever there are several of them as indicated below.

Example

Ca⁺²   Cl ^–1       criss-cross to make the chemical formula CaCl₂

NOTE: DO NOT WRITE 1 IN THE SUBSCRIPT.

Example of a formula of polyatomic ions

Al⁺³   SO₄^-2             makes Al₂(SO₄)₃

Clearly write down the chemical formula of the following hydrocarbons (alkaline) the formula takes the form C_nH2_n+2

1. Ethane         _____________        6. pentane  _____________
2. Methane     _____________         7. heptane  _____________
3. Octane       _____________          8. Propane _____________
4. Decane       _____________         9. nonane  _____________
5. Hexane        _____________        10. butane _____________

Write down the formulas for the following salts (ionic compounds)

1. Magnesium Fluoride    _____________
2. Zinc Carbonate           _____________
3. Aluminum Iodide   _____________
4. Potassium Phosphate   _____________
5. Sodium Chloride   _____________
6. Iron (Ii) Sulfate   _____________
7. Calcium Nitride   _____________
8. Cobalt (Ii) Chlorate   _____________
9. Barium Nitrate   _____________
10. Copper (I) Sulfide   _____________

Write down the formulas for the following metal oxides (basic oxides)

1. Lithium Oxide _____________
2. Iron (Iii) Oxide   _____________
3. Silver Oxide   _____________
4. Copper (Ii) Oxide) _____________
5. Barium Oxide    _____________
6. Magnesium Oxide   _____________
7. Nickel (Ii) Oxide   _____________
8. Potassium Oxide    _____________
9. Tin (Iv) Oxide   _____________
10. Cesium Oxide   _____________

Write down the formulas for the following bases (HINT, ENDS IN HYDROXIDE)

1. lithium hydroxide    _____________
2. zinc hydroxide    _____________
3. barium hydroxide    _____________
4. lead (ii) hydroxide   _____________
5. calcium hydroxide   _____________
6. aluminum hydroxide   _____________
7. potassium hydroxide   _____________
8. magnesium hydroxide   _____________
9. copper (i) hydroxide   _____________
10. copper (ii) hydroxide    _____________

Clearly indicate the chemical formula for the following acids, (HINT, starts with hydrogen)

1. Nitric Acid    _____________
2. Nitrous Acid   _____________
3. Hydrofluoric Acid    _____________
4. Phosphorus Acid   _____________
5. Sulfuric Acid    _____________
6. Hydrosulfuric Acid   _____________
7. Carbonous Acid   _____________
8. Hydroiodic Acid    _____________
9. Sulfurous Acid     _____________
10. Carbonic Acid   _____________

Types Of Chemical Reactions

Generally, there are five major types of chemical reactions as simplified by the following equations:

• Combination or synthesis represented by A + B  AB
• Combustion represented by ? + O₂  ?
• Double Replacement represented by XY + AB  XB + AY
• Decomposition represented by AB  A + B
• Single Replacement represented by X + AB  XB + A or Y + AB  AY + B

Clearly indicate the type of chemical reactions represented below (decomposition, synthesis, double-displacement, sing-displacement or combustion) and balance the equations.

1. __NaBr + __Ca(OH)₂ à __CaBr₂ +  __NaOH     Type of Reaction : ______________
2. __C₅H₉O + __O₂ à__CO₂ +__H₂ Type of Reaction: ______________
3. __Li₃N + __NH₄NO₃ à__LiNO₃ + __(NH₄)₃N       Type of Reaction: ______________
4. __NH₃+ __H₂SO₄ à __(NH₄)₂SO₄                        Type of Reaction: ______________
5. __Pb + __H₃PO₄ à__H₂ + __Pb₃(PO₄)₂            Type of Reaction: ______________
6. __HBr + __Al(OH)₃ à __H­₂O +__AlBr₃              Type of Reaction: ______________

Numbers 7 to 20 represent several chemical reactions, clearly indicate the type of chemical reaction represented below. Indicate whether it is a decomposition, a synthesis, combustion, a double-displacement, or a single-displacement, then balance the equations appropriately.

7. __Na₃PO₄ + __KOH à __NaOH + __K₃PO₄ Type of Chemical Reaction ______________
8. __C₆H₁₂ + __O₂ à __CO₂ + __H₂O  Type of Chemical Reaction   ______________
9. __CaCO₃ à __CaO + __CO₂    Type of Chemical Reaction ______________
10. __RbNO₃ + __BeF₂ à __Be(NO₃)₂ + __RbF   Type of Chemical Reaction ______________
11. __C₃H₆O + __O₂ à __CO₂ + __H₂O    Type of Chemical Reaction ______________
12. __SeCl₆ + __O₂ à __SeO₂ + __Cl₂            Type of Chemical Reaction ______________
13. __MgI₂ + __Mn(SO₃)₂ à __MgSO₃ + __MnI₄ Type of Chemical Reaction ______________
14. __O₃ à __O₂^. + __O₂      Type of Chemical Reaction   ______________
15. __NO₂ à __O₂ + __N₂ Type of Chemical Reaction   ______________
16. __MgCl₂ + __Li₂CO₃ à __MgCO₃ + __LiCl Type of Chemical Reaction ______________
17. __Pb + __FeSO₄ à __PbSO₄ + __Fe  Type of Chemical Reaction   ______________
18. __P₄ + __O₂ à __P₂O₃                         Type of Chemical Reaction   ______________
19. __AgNO₃ + __Cu à __Cu(NO₃)₂ + __Ag      Type of Chemical Reaction  ______________
20. __C₅H₅ + __Fe à __Fe(C₅H₅)₂      Type of Chemical Reaction   ______________
21. Explain what reactions take place during combustion.
22. While labeling all the elements, give an example of a chemical equation.
23. What is the difference between an endothermic and exothermic reaction?
24. What is a catalyst? Give two examples.
25. What are the 4 main types of reactions?
26. What are the different types of reactions in chemistry?
27. How many types of chemical reactions exist?
28. What is a single displacement reaction?
29. What is the difference between displacement reaction and decomposition reaction?
30. Define a chemical reaction
31. What is a chemical formula?
32. What are 5 examples of chemical formulas?
33. What are the first 20 compounds?
34. What is a chemical formula essay?
35. What is the chemical formula of water?
36. Classify the following chemical reactions

• Mg +  N₂ 
• Zn + CuCl₂  
• AgNO₃ +    NaI 
• MgCO₃ 
• HI 
• C₂H₆ + O₂ 
• Ca + H₂O  
• Fe(NO₃)₃ +    LiOH 
• SO₂ + H₂O 
• H₂SO₄ +    LiOH 

37. Classify the following reactions appropriately

• 2 H₂S + 3 O₂    2 SO₂  +    2 H₂O
• Mg(OH)₂  MgO + H₂O
• CaO + H₂O  Ca(OH)₂
• Li₂O + CO₂  LiCO₃
• MgCO₃  MgO + CO₂
• Zn +    Cl₂   ZnCl₂
• Cu + 2 AgNO₃  Cu(NO₃)₂ + 2 Ag
• CaCl₂ +    Na₂SO₄  CaSO₄ + 2 NaCl
• Pb + 4 HCl  PbCl₄ + 2 H₂
• SO₂ + H₂O  H₂SO₃