Chemical Reaction QuizVersion en ligne Test your knowledge on chemical reactions with this fun quiz! par Paradiso Indra 1 What is a chemical reaction? a A type of nuclear reaction. b A physical change in matter. c A process that transforms substances into new products. d A method of cooking food. 2 Which of the following is a sign of a chemical reaction? a Color change. b Change in temperature. c Change in state of matter. d Dissolving in water. 3 What do you call the substances that start a chemical reaction? a Catalysts. b Products. c Reactants. d Solvents. 4 What is produced in a combustion reaction? a Carbon dioxide and water. b Heat and light. c Nitrogen and sulfur. d Oxygen and hydrogen. 5 Which law states that mass is conserved in a chemical reaction? a Law of Chemical Equilibrium. b Law of Thermodynamics. c Law of Conservation of Energy. d Law of Conservation of Mass. 6 What type of reaction involves the exchange of ions? a Decomposition reaction. b Combustion reaction. c Double displacement reaction. d Synthesis reaction. 7 What is an endothermic reaction? a A reaction that occurs in water. b A reaction that absorbs heat. c A reaction that produces gas. d A reaction that releases heat. 8 Which of the following is a catalyst? a Reactant. b Enzyme. c Product. d Solvent. 9 What is the main purpose of a balanced chemical equation? a To predict products. b To indicate temperature changes. c To show conservation of mass. d To show reaction rates. 10 What happens during a decomposition reaction? a A gas is produced. b A compound breaks down into simpler substances. c Two compounds combine. d An element is formed.
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