42. Define a chemical reaction. State four observations which help us to determine that a
chemical reaction has taken places. Write one example of each observation with a balanced
chemical equation.
Answers
Chemical reaction is a process in which one or more reactants are converted into products. The product may be one or more. The chemical reaction can involve an element or a compound which leads to the formation of product or products.
Chemical reaction is a process in which one or more reactants are converted into products. The product may be one or more. The chemical reaction can involve an element or a compound which leads to the formation of product or products. The observation which may be used to show that a chemical reaction has taken place may include;
Chemical reaction is a process in which one or more reactants are converted into products. The product may be one or more. The chemical reaction can involve an element or a compound which leads to the formation of product or products. The observation which may be used to show that a chemical reaction has taken place may include;1. Change in colour- Reaction of Bromine and ethene
Chemical reaction is a process in which one or more reactants are converted into products. The product may be one or more. The chemical reaction can involve an element or a compound which leads to the formation of product or products. The observation which may be used to show that a chemical reaction has taken place may include;1. Change in colour- Reaction of Bromine and ethene( Br2(l) + C2H4⇒ CHBrCHBr)
Chemical reaction is a process in which one or more reactants are converted into products. The product may be one or more. The chemical reaction can involve an element or a compound which leads to the formation of product or products. The observation which may be used to show that a chemical reaction has taken place may include;1. Change in colour- Reaction of Bromine and ethene( Br2(l) + C2H4⇒ CHBrCHBr)2. formation of a precipitate- silver nitrate and NaCl
Chemical reaction is a process in which one or more reactants are converted into products. The product may be one or more. The chemical reaction can involve an element or a compound which leads to the formation of product or products. The observation which may be used to show that a chemical reaction has taken place may include;1. Change in colour- Reaction of Bromine and ethene( Br2(l) + C2H4⇒ CHBrCHBr)2. formation of a precipitate- silver nitrate and NaCl(AgNO3 (aq) + NaCl= AgCl(s) + NaNO3)
Chemical reaction is a process in which one or more reactants are converted into products. The product may be one or more. The chemical reaction can involve an element or a compound which leads to the formation of product or products. The observation which may be used to show that a chemical reaction has taken place may include;1. Change in colour- Reaction of Bromine and ethene( Br2(l) + C2H4⇒ CHBrCHBr)2. formation of a precipitate- silver nitrate and NaCl(AgNO3 (aq) + NaCl= AgCl(s) + NaNO3)3. Temperature change
Chemical reaction is a process in which one or more reactants are converted into products. The product may be one or more. The chemical reaction can involve an element or a compound which leads to the formation of product or products. The observation which may be used to show that a chemical reaction has taken place may include;1. Change in colour- Reaction of Bromine and ethene( Br2(l) + C2H4⇒ CHBrCHBr)2. formation of a precipitate- silver nitrate and NaCl(AgNO3 (aq) + NaCl= AgCl(s) + NaNO3)3. Temperature change4. Change of smell
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Answer:
Chemical reaction is a process in which one or more reactants are converted into products. The product may be one or more. The chemical reaction can involve an element or a compound which leads to the formation of product or products.
The observation which may be used to show that a chemical reaction has taken place may include;