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 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.
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.
Consider the reaction: 2NH3 + 3CuO → N2 + 3Cu + 3H2O. How many different products are formed in this reaction?
Describe how you would experimentally distinguish between a reactant and a product in a chemical reaction involving color change.
Which of the following best describes a reactant? (1) A substance that is formed in a reaction (2) A substance that is used up in a reaction (3) A substance that is always a gas (4) A substance that is always a liquid
Which of the following best describes products in a chemical reaction? (1) Substances present before the reaction (2) Substances formed as a result of the reaction (3) Substances that are always gases (4) Substances that are always liquids
Which of the following is a product in the reaction: 2KClO3 → 2KCl + 3O2? (1) KClO3 (2) KCl (3) O2 (4) Both 2 and 3
Which of the following is a product in the reaction: Zn + 2HCl → ZnCl2 + H2? (1) Zn (2) HCl (3) ZnCl2 (4) Both 1 and 2
Fill in the blank: In a chemical equation, reactants are written on the _______ side of the arrow.
Fill in the blank: In the reaction 2Al + 3Cl2 → 2AlCl3, the product is _______.
Fill in the blank: In the reaction 2SO2 + O2 → 2SO3, the reactants are SO2 and _______.
Fill in the blank: The substances formed as a result of a chemical reaction are called _______.
Is it possible for a chemical reaction to have more than one product?
True or False: In a chemical reaction, the number of atoms of each element is the same on both sides of the equation.
True or False: In every chemical reaction, the total mass of reactants is equal to the total mass of products.
True or False: The arrow in a chemical equation always points from products to reactants.
