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 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.
Given the reaction: Zn + 2HCl → ZnCl2 + H2, list all the products.
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?
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 takes part and 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 a product in a chemical reaction?
(1) A substance that is used up during the reaction
(2) A substance that is formed as a result of the reaction
(3) A substance that remains unchanged
(4) A substance that acts as a catalyst
Which of the following is a product in the reaction: CaCO3 → CaO + CO2?
(1) CaCO3
(2) CaO
(3) CO2
(4) Both (2) and (3)
Which of the following is a reactant in the reaction: 2SO2 + O2 → 2SO3?
(1) SO2
(2) O2
(3) SO3
(4) Both (1) and (2)
Fill in the blank: In a chemical equation, the substances written on the left side of the arrow are called __________.
Fill in the blank: In the reaction 2AgNO3 + Cu → Cu(NO3)2 + 2Ag, the reactants are __________ and __________.
Fill in the blank: In the reaction 2H2 + O2 → 2H2O, the product is __________.
Fill in the blank: In the reaction 2KClO3 → 2KCl + 3O2, the products are __________ and __________.
True or False: A catalyst is considered a reactant in a chemical reaction.
True or False: In a chemical equation, the arrow (→) points from the products to the reactants.
True or False: In a chemical reaction, products are always found on the left side of the chemical equation.
True or False: The number of atoms of each element is always the same on both sides of a balanced chemical equation.
