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50 SCIPAD - BIG IDEAS - BOOK 2
BASIS OF CHEMICAL REACTIONS
Observations: 



Questions
1. Is carbon dioxide heavier or lighter than air? 
2. Why do laboratory fire extinguishers contain carbon dioxide gas? 


Writing Equations: Metal Carbonates + Acid
When a metal carbonate reacts with an acid, a salt, water and carbon dioxide gas are produced.
1. Complete the following word equations.
Magnesium carbonate + Hydrochloric acid
+ Carbon dioxide + Water
Sodium carbonate + Hydrochloric acid
+ Carbon dioxide + Water
Calcium carbonate + Hydrochloric acid
+ Carbon dioxide + Water
Silver carbonate + Sulfuric acid
+ Carbon dioxide + Water
Zinc carbonate + Sulfuric acid
+ Carbon dioxide + Water
Copper carbonate + Sulfuric acid
+ Carbon dioxide + Water
Aluminium carbonate + Nitric acid
+ Carbon dioxide + Water
Iron carbonate + Nitric acid
+ Carbon dioxide + Water
Beryllium carbonate + Nitric acid
+ Carbon dioxide + Water
2.		 Identify the reactants in the following word equations.
+
Lead chloride + Carbon dioxide
+ Water
+
Copper nitrate + Carbon dioxide
+ Water
+
Lithium sulfate + Carbon dioxide
+ Water
+
Nickel chloride + Carbon dioxide
+ Water
+
Iron sulfate + Carbon dioxide
+ Water
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