國中 解答

取兩顆均為 20 公克、25°C之鉛球、銅球,放置於沸騰中的水裡,並持續加熱。 經一段時間後,溫度停留在 100°C,已知鉛與銅比熱分別為 0.031 及 0.092 卡/克.°C, 自沸水中取出兩球,分別置入兩個相同塑膠杯中,杯中裝有等質量且同為 20°C的水 (假設熱量無損失),則裝入何球的水平衡溫度較低?

將 100mL 的甘油進行加熱,當甘油的溫度由 35°C上升至 110°C時,請利用此表所提供的相關資訊, 計算甘油總共吸收多少熱量? 甘油 水 比熱(cal/g.°C) 0.58 1.0 密度(g/cm3) 1.26 1.0

將甲、乙兩杯不同溫度的茶,混合後達到熱平衡。在達到熱平衡的過程中, 假設甲杯茶放出的熱量為 H 甲,乙杯茶吸收的熱量為 H 乙,系統散失的熱量為 H 丙, 請問下列關係何者正確?(H 甲、H 乙、H 丙皆為正值)

以同一熱源分別加熱不同質量 MA、MB、MC 的水,其加熱時間與溫度變化關係如圖, 則 MA、MB、MC 的大小關係為何?

維奇取四杯質量和初溫都不同的水,若同樣加熱到沸點,則哪一杯水吸收的熱量最多?

哪些物理量,會隨溫度的改變而發生變化? (甲)重量、 (乙)質量、 (丙)密度、 (丁)體積。

Neil is on the way to the party. He just got off Bus 38. What does he need to do next to get to the party?

Which is TRUE about the Christmas party?

Where are Jenny andLucy?

What is “one” in the dialogue?

You have three children, May, Alice, and Paula. May is two years old, Alice is four and Paula is seven. Who can stay at “Young Party”?

Hotels like “Young Party”are built because .

Which is TRUE(對)?

Jeff needs a belt and a coat. When can he have the best price?

You want to buy two new T-shirts for a trip. How much can you save on December 2?

Which is true (正確)?

Adam: How was your weekend? Scott: Great! I __________ with my grandpa and learned a lot from it.

Robert: Listen. The clock hit twelve. Noah: Let’s . I’m hungry.

Bob: Wow! You look good in this shirt! Does it _________ a lot? Justin: Not really. I _________ only six hundred dollars for it.

A: Excuse me. B: There’s one near the park over there.

Lisa: _________that last piece of pizza? If not, can I have it? I didn’t have anything last night.

Don’t spend too much time _________ TV. It’s bad for your eyes.

There _______a party for Jill at 11:30 next Saturday. Don’t be late.

Marc enjoys _________ at the park with many friends in summer