
2022-23F2 FINAL REVISION(1)
Authored by Solve lck
Science
7th Grade
Used 3+ times

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19 questions
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1.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
以下哪項有關紅椰菜提取液的敍述是正確的? (1) 它含有的色素跟酸或鹼混合時,會呈現不同的顏色。 (2) 它在稀氫氯酸中呈粉紅色。 (3) 它在稀氫氧化鈉中呈粉紫色。
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
藍色石蕊指示劑
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
以下哪項有關中和作用的敘述並不正確?
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
把氫氧化鈉溶液倒入氫氯酸中,直至溶液變成中性,把這中性溶液蒸乾,在錶面玻璃上會剩下甚麼物質?
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
若給螞蟻螫過,應在傷口處塗上以下哪種物質?
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
把一條鐵片加入盛有稀氫氯酸的試管中, (1) 鐵片的大小會逐漸變小。 (2) 試管會變暖。 (3) 會釋出把石灰水變為乳濁的氣體。 (4) 會中和了試管內的溶液。
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
以下哪項可以用來測試氫?
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