Classify the chemical changes as endothermic or exothermic. Endothermic Exothermic Answer Bank Campers burn wood to stay warm at night. A chemical change takes place in a container, making it feel hot to the touch. A chemical change takes place in a container, making it feel cold to the touch. A "cold pack, often used for sports injuries, starts out at room temperature, but squishing the liquid around causes two substances to mix that were originally kept separate. When those substances react, the pack quickly begins to feel cold. Pocket hand warmers, often used by skiers, start out at room temperature. When the air-tight packaging is opened, a substance contained in a cloth pouch reacts with air, and it quickly begins to feel hot.

Classify the chemical changes as endothermic or exothermic. Endothermic Exothermic Answer Bank Campers burn wood to stay warm at night. A chemical change takes place in a container, making it feel hot to the touch. A chemical change takes place in a container, making it feel cold to the touch. A "cold pack, often used for sports injuries, starts out at room temperature, but squishing the liquid around causes two substances to mix that were originally kept separate. When those substances react, the pack quickly begins to feel cold. Pocket hand warmers, often used by skiers, start out at room temperature. When the air-tight packaging is opened, a substance contained in a cloth pouch reacts with air, and it quickly begins to feel hot.

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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Is the following chemical or physical change endothermic or exothermic? co2 + H20 + sunlight → glucose It is an endothermic chemical change It is an endothermic physical change It is an exothermic physical change It is an exothermic chemical change
Consider a hypothetical chemical reaction: A+B → C+D (In this equation A, B, C and D stand for some unknown chemical formulas.) Here is an energy diagram for the reaction: energy (kJ/mol) 400 300- 200- 100. 0 A+B C + D reaction coordinate Use the energy diagram to answer these questions. What is the heat of reaction? Is the reaction exothermic or endothermic? Are the reactants (A+B) or the products (C+D) more chemically stable? kJ/mol O Exothermic Endothermic Neither Reactants (4+B) O Products (C+D) Neither
3 of 24 Endothermic Exothermic Answer Bank A chemical change takes place in a container, making it feel cold to the touch. A chemical change takes place in a container, making it feel hot to the touch. Campers burn wood to stay warm at night. Pocket hand warmers, often used by skiers, start out at room temperature. When the air-tight packaging is opened, a substance contained in a cloth pouch reacts with air, and it quickly begins to feel hot. A "cold pack," often used for sports injuries, starts out at room temperature, but squishing the liquid around causes two substances to mix that were originally kept separate. When those substances react, the pack quickly begins to feel cold.
Which of the following is true about an exothermic process? O An exothermic process feels hot to touch An exothermic process absorbs energy from the surroundings An exothermic reaction has products that are higher in energy than the reactants O An exothermic process feels cold to touch O More than one of these statements are true
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