Question

mixing vinegar and baking soda; combustion of gasoline; burning wood; categorize as either an endothermic or exothermic reaction; endothermic reaction: cooking an egg, melting ice; exothermic reaction: fireworks exploding, freezing water

Explanation:

• mixing vinegar and baking soda: The reaction between acetic acid (vinegar) and sodium bicarbonate (baking soda) absorbs heat from the surroundings, classifying it as endothermic.
• combustion of gasoline: Combustion reactions release energy (heat/light), so this is exothermic.
• burning wood: Combustion of wood (oxidation of organic matter) releases heat/light, making it exothermic.

(Note: The pre - listed examples: cooking an egg (endothermic, heat absorbed to cook), melting ice (endothermic, heat absorbed to melt), fireworks exploding (exothermic, energy released), freezing water (exothermic, heat released as water becomes ice) follow standard endothermic/exothermic definitions.)

Answer:

• mixing vinegar and baking soda: Endothermic Reaction
• combustion of gasoline: Exothermic Reaction
• burning wood: Exothermic Reaction