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Define a chemical reaction.state four observations which help us to determine that a chemical reaction has taken place.write one example of each observation with a balanced chemical equation?
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Define a chemical reaction.state four observations which help us to de...
Chemical Reaction:
Chemical reaction is a process that leads to the transformation of one set of chemical substances to another. It involves the breaking and forming of chemical bonds resulting in the rearrangement of atoms to produce new substances.
Observations indicating a chemical reaction:
- Change in color
- Formation of a precipitate
- Evolution of gas
- Change in temperature
Example of each observation:
1. Change in color: When iron nails are placed in copper sulfate solution, the color of the solution changes from blue to green due to the formation of iron sulfate.
Balanced chemical equation: Fe(s) + CuSO4(aq) → FeSO4(aq) + Cu(s)
2. Formation of a precipitate: Mixing silver nitrate solution with sodium chloride solution results in the formation of a white precipitate of silver chloride.
Balanced chemical equation: AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq)
3. Evolution of gas: When hydrochloric acid reacts with calcium carbonate, carbon dioxide gas is evolved which can be observed as bubbles.
Balanced chemical equation: 2HCl(aq) + CaCO3(s) → CaCl2(aq) + CO2(g) + H2O(l)
4. Change in temperature: Mixing citric acid with sodium bicarbonate results in an endothermic reaction, leading to a decrease in temperature.
Balanced chemical equation: H3C6H5O7(aq) + 3NaHCO3(aq) → 3CO2(g) + 3H2O(l) + Na3C6H5O7(aq)
Chemical reaction is a process that leads to the transformation of one set of chemical substances to another. It involves the breaking and forming of chemical bonds resulting in the rearrangement of atoms to produce new substances.
Observations indicating a chemical reaction:
- Change in color
- Formation of a precipitate
- Evolution of gas
- Change in temperature
Example of each observation:
1. Change in color: When iron nails are placed in copper sulfate solution, the color of the solution changes from blue to green due to the formation of iron sulfate.
Balanced chemical equation: Fe(s) + CuSO4(aq) → FeSO4(aq) + Cu(s)
2. Formation of a precipitate: Mixing silver nitrate solution with sodium chloride solution results in the formation of a white precipitate of silver chloride.
Balanced chemical equation: AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq)
3. Evolution of gas: When hydrochloric acid reacts with calcium carbonate, carbon dioxide gas is evolved which can be observed as bubbles.
Balanced chemical equation: 2HCl(aq) + CaCO3(s) → CaCl2(aq) + CO2(g) + H2O(l)
4. Change in temperature: Mixing citric acid with sodium bicarbonate results in an endothermic reaction, leading to a decrease in temperature.
Balanced chemical equation: H3C6H5O7(aq) + 3NaHCO3(aq) → 3CO2(g) + 3H2O(l) + Na3C6H5O7(aq)
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Define a chemical reaction.state four observations which help us to determine that a chemical reaction has taken place.write one example of each observation with a balanced chemical equation?
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Define a chemical reaction.state four observations which help us to determine that a chemical reaction has taken place.write one example of each observation with a balanced chemical equation? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Define a chemical reaction.state four observations which help us to determine that a chemical reaction has taken place.write one example of each observation with a balanced chemical equation? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Define a chemical reaction.state four observations which help us to determine that a chemical reaction has taken place.write one example of each observation with a balanced chemical equation?.
Define a chemical reaction.state four observations which help us to determine that a chemical reaction has taken place.write one example of each observation with a balanced chemical equation? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Define a chemical reaction.state four observations which help us to determine that a chemical reaction has taken place.write one example of each observation with a balanced chemical equation? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Define a chemical reaction.state four observations which help us to determine that a chemical reaction has taken place.write one example of each observation with a balanced chemical equation?.
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