Classify the chemical changes as endothermic or exothermic. Endothermic Exothermic Answer Bank A chemical change takes place in a container, making it feel hot to the touch. 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. Campers burn wood to stay warm at night. A chemical change takes place in a container, making it feel cold to the touch.
Classify the chemical changes as endothermic or exothermic. Endothermic Exothermic Answer Bank A chemical change takes place in a container, making it feel hot to the touch. 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. Campers burn wood to stay warm at night. A chemical change takes place in a container, making it feel cold to the touch.
World of Chemistry, 3rd edition
3rd Edition
ISBN:9781133109655
Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Chapter10: Energy
Section: Chapter Questions
Problem 62A
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Transcribed Image Text:Classify the chemical changes as endothermic or exothermic.
Endothermic
Exothermic
Answer Bank
A chemical change takes place in a container, making it feel hot to the touch.
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.
Campers burn wood to stay warm at night.
A chemical change takes place in a container, making it feel cold to the touch.
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