國中 解答

沛沛這個禮拜負責餵養學校收養的貓咪,需要準備貓用牛奶給貓咪喝,已知沖泡貓用牛奶的理想水溫為45°C。若沛沛有25°C、100公克的水,則必須加入65°C的熱水多少公克,才會達到沖泡貓用牛奶的理想水溫?(不計熱量散失)

一品管員為測試熱水瓶的保溫效果,將2公升100°C的開水各注入甲~丁瓶中,測得溫度與時間相關的資料如附圖所示。若合格的熱水瓶的保溫效果,是5小時之內流失的熱量在100大卡以下,則合格的保溫瓶為下列哪些?

下列何者反應的吸熱與放熱與其他三者不同?

如附圖所示,在白光的照射下,阿舍所看見圖卡中藍色、紅色、綠色、白色部分的面積分別為8cm2、4cm2、2cm2、2cm2。用下列哪一種顏色的光照射圖卡,阿舍最可能看見黑色部分的面積為12cm2?

若B杯水的初溫為40°C,則B杯水加熱至沸騰,需多少分鐘?

哪一個是化合物?

將三者加熱至35°C時,何者吸熱最少?

三者中,何者比熱最小?

將錐形瓶放入45°C的熱水中,則細玻璃管內的水面最後高出瓶塞幾公分?

下列關於原子的描述,何者與道耳頓原子說的觀點差異最大?

已知甲、乙為質量相等的兩個固體物質,吸收相同熱量時,甲物體上升的溫度較乙物體多。請參考附表,若乙物體為鋅,請推測甲物體可能是哪種物質?

What is the answer of the ★ ?

What is TRUE about this dialogue?

What holiday is Jenny’s favorite?

How many (有多少) students in Class A like Moon Festicval?

Which is NOT true about this reading?

What is NOT necessary (必要的) for birds to live?

Meg: Hey, look at the purple watch. It’s great for Sarah’s birthday. Zoe: Yes, it is. When is her birthday? Meg: Her birthday is the day before Christmas. Zoe: Wow, .

Daisy: Leo, there is a flea market in the park this Sunday. Leo: . Let’s go together on that day! Daisy: Sure!

Sandro: I’m a big fan of Shinkai Makoto. , Leia? Leia: I’m a fan of him, too. I love the movie Your Name so much!

That’s her to study in Sanduo Junior High School.

Gino: What is it today? Cardi: It’s .

There’s a baseball game seven thirty Saturday.

Peppa: there students on the bus? Maisy: Yes, there are twenty-six students.