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理科 中学生

至急!!!! このそれぞれ(ア.デンプン溶液と唾液イ.デンプン溶液と水)のヨウ素液に対する反応、ベネジクト液に対する反応⇒色の変化 (1)ヨウ素液の反応からわかること (2)ベネジクト液の反応からわかること (3)1.2から唾液はデンプンに対してどんな働きをするか 教えてい... 続きを読む

1 デンプン溶液に だ液を加える。 ① 試験管にデンプン溶液5mLと うすめただ液2mLを入れてよく 混ぜ合わせる。 ②試験管①にデンプン溶液5mLと 水2mLを入れてよく混ぜ合わせ る。 ③試験管⑦を36℃くらいの水 に入れて10分間おく。 ④試験管の溶液, 試験管の溶液 をそれぞれ2本の試験管に分ける。 2 ヨウ素液を入れる。 ⑦-1, -1の試験管にそれ ぞれヨウ素液を数滴加えて色の 1238 変化を見る。 ヨウ素液 8-1 → デンプン溶液 ( 5mL) と だ液 ( 2mL) 2-2 -2 PUTER 3 ベネジクト液を入れて 加熱する。 ヒトの体温に近い 36°Cくらいの水に 10分間入れる。 ⑦-2, -2の試験管にそれぞれベネ ジクト液を数滴加え、沸騰石を入れる。 試験管を振りながら加熱して、 色の変 化を見る。 ・ベネジクト液 -2 沸騰石 デンプン溶液 ( 5mL) と 水 (2mL) 注意 -2 ●試験管を軽 く振りながら加熱す る。 ●液体が飛び出すご とがあるので、試 管の口を人のいる方 向へ向けない。 Fr

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英語 中学生

あ に入るのは、until か withoutのどちらですか? 解説もありでお願いします!

Jane: Risa: Jane: Risa: Jane: Risa: Jane: Risa: Jane: Risa: I was woken up by the earthquake this morning, and couldn't go back to sleep after that. Nothing fell on the floor or was damaged, but definitely it was a big one! I was scared! Yeah, it woke me up, too. I haven't felt one like that in a while, but I think I was too used to those shakings. I went to sleep right after. Weren't you scared, Risa? Yes, but just a little. I think I'm afraid of a really big one, like the one in Tohoku in 2011, anyway. You know, you can't be just scared ( ) preparing for disasters, Jane. Do you know what to do in an earthquake? There are almost no earthquakes in your country, right? No, I haven't experienced one in the U.K. Can you tell me what to do? Sure. The first priority is your safety. Hide under a desk or table to protect your head. Stay there until the earthquake stops. Then be prepared to move to a safer place. I'm sure we'll do some simulations in the evacuation drill held at school next Monday. We'll learn there what's important to do during an earthquake. Wow! That sounds great. I'm looking ( 1) the drill now. Maybe we can get "Moriyama-ku Evacuation Map" after the drill. It shows you (in, where, should, you, a disaster, go ). Jane: Risa: Oh, I'm glad to know that. You should make an emergency kit, too. Our family has made one each and put them near their bed. I see. Can you tell me how I should make it? Well, I'll send you an email later then. Jane: * I'm getting less scared, Risa. Thank you very much. Risa: You know, Jane, "Don't be scared; be prepared."! woken wakeの過去分詞 definitely 確かに in a while しばらく be used to ・・・・・・に慣れている right after その後すぐに priority safety hide En

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英語 中学生

あ に入るのは、until か withoutのどちらですか? 解説もありでお願いします!

Jane: Risa: Jane: Risa: Jane: Risa: Jane: Risa: Jane: Risa: I was woken up by the earthquake this morning, and couldn't go back to sleep after that. Nothing fell on the floor or was damaged, but definitely it was a big one! I was scared! Yeah, it woke me up, too. I haven't felt one like that in a while, but I think I was too used to those shakings. I went to sleep right after. Weren't you scared, Risa? Yes, but just a little. I think I'm afraid of a really big one, like the one in Tohoku in 2011, anyway. You know, you can't be just scared ( ) preparing for disasters, Jane. Do you know what to do in an earthquake? There are almost no earthquakes in your country, right? No, I haven't experienced one in the U.K. Can you tell me what to do? Sure. The first priority is your safety. Hide under a desk or table to protect your head. Stay there until the earthquake stops. Then be prepared to move to a safer place. I'm sure we'll do some simulations in the evacuation drill held at school next Monday. We'll learn there what's important to do during an earthquake. Wow! That sounds great. I'm looking ( 1) the drill now. Maybe we can get "Moriyama-ku Evacuation Map" after the drill. It shows you (in, where, should, you, a disaster, go ). Jane: Risa: Oh, I'm glad to know that. You should make an emergency kit, too. Our family has made one each and put them near their bed. I see. Can you tell me how I should make it? Well, I'll send you an email later then. Jane: * I'm getting less scared, Risa. Thank you very much. Risa: You know, Jane, "Don't be scared; be prepared."! woken wakeの過去分詞 definitely 確かに in a while しばらく be used to ・・・・・・に慣れている right after その後すぐに priority safety hide En

回答募集中 回答数: 0