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Tag: Chemistry

Browse quiz questions tagged Chemistry. Open any link for the full question, choices, and learning notes.

• 切開的蘋果放置在空氣中不久後，切面會變成褐色，主要是因為蘋果中的多酚氧化酶（PPO）催化了哪種化學轉變？Cut apples turn brown after being exposed to the air, mainly becaus…Science
• 打開汽水瓶蓋時會瞬間冒出大量氣泡，這是因為壓力減小導致哪種氣體在水中的溶解度急劇下降？ Opening a soda bottle produces a rush of bubbles. This is because a decreas…Science
• 鐵製品暴露在潮濕空氣中會生鏽，這本質上是一個什麼樣的化學反應過程？ Iron objects rust when exposed to moist air. What kind of chemical reaction process i…Science
• 辣椒為什麼吃起來會覺得「辣」？ 辣椒中的哪種化學物質會與我們舌頭上的熱覺受器（TRPV1）結合，產生灼熱感？ Why do chili peppers taste "spicy"? Which chemical substance in…Science
• 為什麼切洋蔥會讓人流眼淚？ 當洋蔥被切開時，釋放出的哪種揮發性含硫化合物會刺激眼睛？ Why do onions make you cry? What volatile sulfur compound is released when a…Science

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