Question

endothermic exothermic answer bank a chemical change takes place in a container, making it feel hot 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 campers burn wood to stay warm at night a chemical change takes place in a container, making it feel cold to the touch

Explanation:

Step1: Understand endothermic and exothermic reactions

Endothermic reactions absorb heat (make surroundings feel cold). Exothermic reactions release heat (make surroundings feel hot).

Step2: Analyze each option

• For "A chemical change takes place in a container, making it feel hot to the touch": Releases heat → Exothermic.
• For "A 'cold pack...the pack quickly begins to feel cold": Absorbs heat → Endothermic.
• For "Pocket hand warmers...it quickly begins to feel hot": Releases heat → Exothermic.
• For "Campers burn wood to stay warm at night": Combustion (releases heat) → Exothermic.
• For "A chemical change takes place in a container, making it feel cold to the touch": Absorbs heat → Endothermic.

Answer:

• Endothermic: A "cold pack...the pack quickly begins to feel cold"; A chemical change takes place in a container, making it feel cold to the touch.
• Exothermic: A chemical change takes place in a container, making it feel hot to the touch; Pocket hand warmers...it quickly begins to feel hot; Campers burn wood to stay warm at night.