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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 9
Describe what happens to the atoms of reactants during a chemical reaction.
Describe what happens to the total number of atoms during a chemical reaction.
Describe what is meant by the term 'chemical equation'.
Explain why balancing a chemical equation is necessary when identifying reactants and products.
Explain why it is important to identify reactants and products in a chemical reaction.
Explain why the mass of products is equal to the mass of reactants in a chemical reaction.
Identify the reactants in the following reaction: 2Mg + O2 → 2MgO
If 10 grams of reactants are used in a chemical reaction, what will be the total mass of products formed?
In a chemical reaction, what does the arrow (→) represent?
In the reaction: 2Fe + 3Cl2 → 2FeCl3, how many molecules of FeCl3 are produced from 2 molecules of Fe?
In the reaction: 2H2O2 → 2H2O + O2, what is the reactant?
In the reaction: 2K + 2H2O → 2KOH + H2, what are the products?
In the reaction: 2Na + Cl2 → 2NaCl, how many reactants are there?
In the reaction: CaCO3 → CaO + CO2, how many products are formed?
In the reaction: CH4 + 2O2 → CO2 + 2H2O, list all the products.
In the reaction: Fe + S → FeS, identify the reactants and the product.
In the reaction: Pb(NO3)2 + 2KI → PbI2 + 2KNO3, name all the reactants.
State the difference between reactants and products in a chemical reaction.
A reaction is represented as: C2H4 + H2 → C2H6. If 5 moles of C2H4 react completely, how many moles of C2H6 will be produced?
A student mixes aqueous solutions of barium chloride and sodium sulfate. A white precipitate forms. Write the balanced chemical equation for this reaction and identify the reactants and products.