Identify the type of chemical reaction in the following statement and define each of them:
A. Digestion of food in our body.
B.
Rusting of iron.
C. Heating of manganese dioxide with aluminum powder.
D. Blue colour of copper sulphate solution disappears when iron filings are added to it.
E. Dilute hydrochloric acid is added to sodium hydroxide
solution to form sodium chloride and water.
Answers
Answered by
1
Answer:
rusting of iron is a chemical change
Explanation:
part d and c is your answer
Answered by
11
Explanation:
- Digestion begins in the mouth with the secretion of saliva and its digestive enzymes. Food is formed into a bolus by the mechanical mastication and swallowed into the esophagus from where it enters the stomach through the action of peristalsis.
- You get a thermite reaction. The aluminum takes the oxygen from the manganese dioxide and reduces the manganese dioxide to metallic manganese and creates aluminum oxide plus a LOT of heat
- when an iron nail is placed in a copper sulphate solution solution, iron displaces copper from copper sulphate solution forming iron sulphate, which is light green in colour. It is because iron is more reactive than copper.
- When hydrochloric acid reacts with sodium hydroxide, sodium chloride and water are produced. The heat evolved in the neutralisation reaction raises the temperature of the reaction mixture.
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