✔ 最佳答案
1. The iodine soultion is used to test for presence of starch. When the iodine solution touch the green leaf with starch, the iodine solution will turns from brown to dark blue.
1. 碘液是用來去測試綠色植物裏的澱粉,當碘液遇到澱粉時就會由啡色轉做深藍色。
2. Yes. Test tube filled with oxygen can make the glowing splint relights. Because burning needs oxygen and the test tube is filled with oxygen, so it can relights.
2. 可以,因為燃燒是需要氧氣的。
(如果有甚麼不明白,可以看看 the english translation.)