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.
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Describe how you can identify the products in a written chemical equation.
Describe what happens to the reactants during a chemical reaction.
Explain the difference between a reactant and a product in a chemical reaction.
Explain why the mass of products in a chemical reaction is equal to the mass of reactants.
Given the reaction: 2Al + 3Cl2 → 2AlCl3, how many moles of AlCl3 are produced from 6 moles of Cl2?
Given the reaction: 2KClO3 → 2KCl + 3O2, how many moles of O2 are produced when 4 moles of KClO3 decompose?
Given the reaction: N2 + 3H2 → 2NH3, how many moles of NH3 are produced from 1 mole of N2?
In the reaction: 2H2O2 → 2H2O + O2, how many molecules of water are produced from 4 molecules of hydrogen peroxide?
Which of the following best defines a reactant in a chemical reaction?
(1) A substance formed as a result of the reaction
(2) A substance that is consumed during the reaction
(3) A catalyst that speeds up the reaction
(4) A by-product of the reaction
Which of the following best describes the role of a product in a chemical reaction?
(1) It is consumed during the reaction
(2) It is formed as a result of the reaction
(3) It acts as a catalyst
(4) It is always a gas
Which of the following is a product in the reaction: 2Na + 2H2O → 2NaOH + H2?
(1) Na
(2) H2O
(3) NaOH
(4) Both (3) and (4)
Which of the following is always true for a chemical reaction?
(1) The number of reactants equals the number of products
(2) The mass of reactants equals the mass of products
(3) The volume of reactants equals the volume of products
(4) The color of reactants equals the color of products
Fill in the blank: In a chemical equation, substances written on the left side of the arrow are called ______.
Fill in the blank: In the reaction 2Mg + O2 → 2MgO, the product is ______.
Fill in the blank: In the reaction NaCl + AgNO3 → AgCl + NaNO3, the products are ______ and ______.
Fill in the blank: In the reaction Zn + 2HCl → ZnCl2 + ______, the missing product is ______.
Is it possible for a chemical reaction to have more than one product?
State whether the following statement is true or false: In a chemical reaction, the products are always more complex than the reactants.
State whether the following statement is true or false: Reactants are always present in greater quantity than products.
True or False: In every chemical reaction, the total mass of reactants equals the total mass of products.
