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Based on their descriptions, classify these chemical changes as endothermic or exothermic. 1) A chemical change takes place in a container, making it feel cold to touch. 2) Burning wood 3) A chemical change takes place in a container, making it feel hot to touch. 4) Pocket hand warmers(used by skiers) start out at room temperature. When you open the air tight packaging, a substance reacts with air, and it quickly begins to feel hot. 5) A "cold pack" (used for sport injuries) starts out a room temperature. But when you squish the liquid around, you cause two substances to mix that were originally kept separate. Those substances react and the pack begins to feel cold.

Kevin Sutter

in Chemistry

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Ashley Howard on December 6, 2018

_Award brainliest if helped!1. Endothermic2. Exothermic3. Exothermic4. Exothermic5. Endothermic(Endothermic absorbs energy (heat) in the environments that surround the refrigerator, and vice versa for exothermic.)


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