(1)组装实验装置时,对于盛水的烧杯和测水温的温度计,应先调整
(2)实验过程中,某时刻温度计的示数如图乙所示,此时水的温度为
(3)观察到水沸腾后的实验现象:①温度计的示数保持不变;②水中产生大量气泡,气泡不断上升且
(4)实验结束后撤去酒精灯,水还能继续沸腾一小会,这说明水沸腾时不需要吸热。这种判断是
(5)由实验数据作出水的温度随时间变化的图象如图丙所示。根据图象,请给实验提一条合理化建议:
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2