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Questions and Answers
What is the name of the reaction described in the text involving Fe2O3 and Al?
What is the name of the reaction described in the text involving Fe2O3 and Al?
- Oxidation-reduction reaction
- Decomposition reaction
- Displacement reaction (correct)
- Combination reaction
When copper powder is heated, what is the visible change that takes place?
When copper powder is heated, what is the visible change that takes place?
- Formation of copper oxide (correct)
- Formation of copper chloride
- Formation of copper nitrate
- Formation of copper sulfate
Which type of reaction is the process of white washing walls with calcium hydroxide?
Which type of reaction is the process of white washing walls with calcium hydroxide?
- Neutralization reaction (correct)
- Precipitation reaction
- Combustion reaction
- Decomposition reaction
In the thermite reaction, what is the role of Al?
In the thermite reaction, what is the role of Al?
What is the product formed when CuO reacts with hydrogen gas?
What is the product formed when CuO reacts with hydrogen gas?
What color does a brown residue indicate in a chemical reaction?
What color does a brown residue indicate in a chemical reaction?
What type of reaction occurs when zinc reacts with silver nitrate?
What type of reaction occurs when zinc reacts with silver nitrate?
In the reaction between potassium iodide and lead nitrate, what is the product potassium nitrate classified as?
In the reaction between potassium iodide and lead nitrate, what is the product potassium nitrate classified as?
What observation was made about the reaction discussed in question 20?
What observation was made about the reaction discussed in question 20?
When solid A and solid B are mixed without heating, what happens?
When solid A and solid B are mixed without heating, what happens?
Based on the information given, which of the following statements about the reaction mentioned is most likely correct?
Based on the information given, which of the following statements about the reaction mentioned is most likely correct?
In the reaction involving iron (III) oxide and aluminum powder, which product settles down in the molten state?
In the reaction involving iron (III) oxide and aluminum powder, which product settles down in the molten state?
Which type of chemical reaction occurs when sodium hydroxide reacts with HCl to form sodium chloride and water?
Which type of chemical reaction occurs when sodium hydroxide reacts with HCl to form sodium chloride and water?
What happens when an iron object is left in moist air for a few days or weeks?
What happens when an iron object is left in moist air for a few days or weeks?
Which type of chemical reaction involves a more reactive metal displacing a less reactive metal from its salt solution?
Which type of chemical reaction involves a more reactive metal displacing a less reactive metal from its salt solution?
In the context of chemical reactions, what does the term 'balance the chemical equation' refer to?
In the context of chemical reactions, what does the term 'balance the chemical equation' refer to?
What is the balanced chemical equation for the reaction between barium chloride and potassium sulfate?
What is the balanced chemical equation for the reaction between barium chloride and potassium sulfate?
What happens when natural gas burns and combines with oxygen?
What happens when natural gas burns and combines with oxygen?
