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Questions and Answers
What is an exothermic reaction?
What is an exothermic reaction?
Reaction in which heat is released along with the formation of products.
Give an example of an exothermic reaction related to respiration.
Give an example of an exothermic reaction related to respiration.
Respiration
What are decomposition reactions?
What are decomposition reactions?
Reactions in which a single substance decomposes to give two or more substances.
What is a thermal decomposition reaction?
What is a thermal decomposition reaction?
Define endothermic reactions.
Define endothermic reactions.
Give an example of a displacement reaction.
Give an example of a displacement reaction.
What type of reaction is it when fats and oils become rancid due to oxidation?
What type of reaction is it when fats and oils become rancid due to oxidation?
Why are antioxidants added to foods containing fats and oil?
Why are antioxidants added to foods containing fats and oil?
What type of reaction occurs when copper vessels lose their shine when exposed to air?
What type of reaction occurs when copper vessels lose their shine when exposed to air?
Which gas is produced when dilute hydrochloric acid acts on zinc granules?
Which gas is produced when dilute hydrochloric acid acts on zinc granules?
What type of reaction is represented by the equation: Fe2O3 + 2Al → Al2O3 + 2Fe?
What type of reaction is represented by the equation: Fe2O3 + 2Al → Al2O3 + 2Fe?
What type of reaction absorbs energy?
What type of reaction absorbs energy?
Why does the color of copper sulfate solution change when an iron nail is dipped into it?
Why does the color of copper sulfate solution change when an iron nail is dipped into it?
Give an example of a decomposition reaction that proceeds by absorbing electric energy.
Give an example of a decomposition reaction that proceeds by absorbing electric energy.
What is a chemical reaction?
What is a chemical reaction?
How can we recognize a chemical reaction?
How can we recognize a chemical reaction?
Why is it important to balance a chemical equation?
Why is it important to balance a chemical equation?
What is a combination reaction?
What is a combination reaction?
What does the symbol (aq) represent in a chemical equation?
What does the symbol (aq) represent in a chemical equation?
How is the physical state of reactants and products indicated in a chemical equation?
How is the physical state of reactants and products indicated in a chemical equation?
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