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Reactants and Products in Chemical Reactions

Chemistry ⇒ Chemical Reactions and Equations

Reactants and Products in Chemical Reactions starts at 7 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Reactants and Products in Chemical Reactions. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 10
Describe what happens to the reactants during a chemical reaction.
Explain why it is important to identify reactants and products in a chemical reaction.
Explain why the identification of products is important in industrial chemical processes.
Given the reaction: Zn + 2HCl → ZnCl2 + H2, list all the products.
In the chemical reaction: 2H2 + O2 → 2H2O, identify the reactants.
In the reaction: 2Al + 3Cl2 → 2AlCl3, how many moles of Cl2 are required to react with 2 moles of Al?
In the reaction: 2H2O2 → 2H2O + O2, how many molecules of O2 are produced from 4 molecules of H2O2?
In the reaction: 2Mg + O2 → 2MgO, how many moles of MgO are produced when 2 moles of Mg react completely?
In the reaction: CH4 + 2O2 → CO2 + 2H2O, how many products are formed?
In the reaction: Fe + S → FeS, which substance is the product?
In the reaction: Pb(NO3)2 + 2KI → PbI2 + 2KNO3, name all the products.
State the difference between reactants and products in a chemical reaction.
A chemical reaction is represented as: C6H12O6 + 6O2 → 6CO2 + 6H2O. If 1 mole of C6H12O6 reacts completely, how many moles of H2O are produced?
A student writes the following unbalanced chemical equation: Fe + O2 → Fe2O3. Identify all the reactants and products in this reaction, and explain how you determined them.
Consider the following reaction: 2NaHCO3 (s) → Na2CO3 (s) + CO2 (g) + H2O (g). If you start with 4 moles of NaHCO3, how many moles of CO2 will be produced?
Context: A laboratory experiment involves mixing aqueous solutions of barium chloride and sodium sulfate, resulting in the formation of a white precipitate. Write the balanced chemical equation for this reaction and identify the reactants and products.
Explain, with an example, how the physical state of reactants and products can be indicated in a chemical equation and why this information is important.