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35. What do you call the minimum amount of energy needed to start a chemical reaction? A. Bond energy B. Kinetic energy C. Potential energy D. Activation energy How is a chemical equation balanced? 36. A. adding coefficient B. changing subscripts C. adding elements as necessary D. erasing elements as necessary 37. Hydrogen peroxide is a widely used disinfectant for minor cuts and scrapes. It is always kept in a dark brown bottle because it needs to be protected from light. If it is not, it will gradually breakdown to water and oxygen. What type of reaction is this? A. Combination B. Decomposition C. Single displacement D. Double displacement is the

35. What do you call the minimum amount of energy needed to start a chemical reaction? A. Bond energy B. Kinetic energy C. Potential energy D. Activation energy How is a chemical equation balanced? 36. A. adding coefficient B. changing subscripts C. adding elements as necessary D. erasing elements as necessary 37. Hydrogen peroxide is a widely used disinfectant for minor cuts and scrapes. It is always kept in a dark brown bottle because it needs to be protected from light. If it is not, it will gradually breakdown to water and oxygen. What type of reaction is this? A. Combination B. Decomposition C. Single displacement D. Double displacement is the

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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35, 36. What do you call the minimum amount of energy needed to start a chemical reaction? A. Bond energy B. Kinetic energy C. Potential energy D. Activation energy chemical equation A is How balanced? A. adding coefficient B. changing subscripts C. adding elements as necessary D. erasing elements as necessary 37. Hydrogen peroxide is a widely used disinfectant for minor cuts and scrapes. It is always kept in a dark brown bottle because it needs to be protected from light. If it is not, it will gradually breakdown to water and oxygen. What type of reaction is this? A. Combination B. Decomposition C. Single displacement D. Double displacement 38. Magnesium chloride (MgCl₂) is the product of a reaction between magnesium (Mg) and chlorine (Cl₂). What is its chemical equation? A. Mg Cl₂ MgCl2 B. Mg Cl₂ MgCl C. MgCl₂ → Mg +Cl₂ D. MgCl₂ Mg + Cl 39. What mass of CO2 will be formed when 6g of carbon is burnt in 32g of oxygen? A. 12 g B. 22 g C. 26 g D. 38 g 40. Which of the following supports the notion that mass is conserved before and after the reaction? A. The chemical equation balanced in both sides. is B. Same elements were involved only before the reaction. C. Two moles of carbon and oxygen yielded to 2 moles of carbon monoxide. D. Equal amount of carbon gas and oxygen gas was involved in the reaction.
Transcribed Image Text:35, 36. What do you call the minimum amount of energy needed to start a chemical reaction? A. Bond energy B. Kinetic energy C. Potential energy D. Activation energy chemical equation A is How balanced? A. adding coefficient B. changing subscripts C. adding elements as necessary D. erasing elements as necessary 37. Hydrogen peroxide is a widely used disinfectant for minor cuts and scrapes. It is always kept in a dark brown bottle because it needs to be protected from light. If it is not, it will gradually breakdown to water and oxygen. What type of reaction is this? A. Combination B. Decomposition C. Single displacement D. Double displacement 38. Magnesium chloride (MgCl₂) is the product of a reaction between magnesium (Mg) and chlorine (Cl₂). What is its chemical equation? A. Mg Cl₂ MgCl2 B. Mg Cl₂ MgCl C. MgCl₂ → Mg +Cl₂ D. MgCl₂ Mg + Cl 39. What mass of CO2 will be formed when 6g of carbon is burnt in 32g of oxygen? A. 12 g B. 22 g C. 26 g D. 38 g 40. Which of the following supports the notion that mass is conserved before and after the reaction? A. The chemical equation balanced in both sides. is B. Same elements were involved only before the reaction. C. Two moles of carbon and oxygen yielded to 2 moles of carbon monoxide. D. Equal amount of carbon gas and oxygen gas was involved in the reaction.
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