题干

为了比较水和食用油的吸热能力,小明用两个相同的装置做了如图所示的实验。用温度计测量液体吸收热量后升高的温度值,并用钟表记录加热时间。实验数据记录如下表。

物质质量/g初始温度/℃加热时间/min最后温度/℃
水6020645
食用油6020668

(1)在实验过程中控制加热时间相同,通过比较____ 来研究水和食用油吸热能力的差异。
(2)在此实验中,如果要使水和食用油的最后温度相同,就要给____ 加热更长的时间,此时水吸收的热量____ (选填“大于”“或”“小于”或“等于”)食用油吸收的热量。
(3)通过实验可以得到不同的物质吸热能力不同,物质的这种特性用____ 这个物理量来描述。

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答案(点此获取答案解析)

升高的温度,水,大于,比热容

同类题4

阅读下面短文, 从短文后各题所给的四个选项(A、B、C、D)中, 选出可以填入空白处的最佳选项。
    “Selfless Blessings, a small shop in Missouri offers everything from food to clothing. But it 1 from other shops because everything in the store is free.
    “Selfless Blessings is like a thrift store(旧货商店) but we are a free store for families who are in 2 ,” said the store's 3 , Andrea Berdine. “People come in and 4 . We have a donation box. If they can 5 , they do so. If they can't, then they leave with a hug.”
    Berdine 6 the project in 2012 after witnessing something that brought her to tears. She was shopping at a store when she saw a man was turned away 7 he asked for a coat.
    He was put down and made fun of. He was wanting a coat,” she recalled. “It was 8that he was homeless. That day it was raining heavily. That man was trembling with 9 and wet. However, nobody 10 give him a coat.” Berdine was 11. She got in her car and drove around until she found the man. She then picked up her husband's 12 from the back seat.
    That act of giving 13 Berdine to create a Facebook page where the community could connect and 14 each other. Some people posted items that they could donate. Others spoke of what they needed. The idea, which people in need all welcomed, 15 grew into a free shop in Hollister, Missouri.
    “Thank God. There is a place you can go to without feeling 16 or embarrassed,” said Dennie Alman, who is now 17.
    The store's offerings can mean the difference between life and 18 for some poor people. “When it's freezing cold outside and you don't have anything to keep19, then the blankets you are given can keep you from dying,” said Larry Fraser, who is 20.