配套习题- 化学反应中的能量变化 -【青果学院】

1/5单选题

难度：

1.下列化学变化中吸收热量的是

A	高温下碳和二氧化碳反应
B	稀盐酸与氢氧化钠反应
C	镁与稀盐酸反应
D	一氧化碳燃烧

正确答案：QQ==

QeOAgeeis+WSjOS6jOawp+WMlueis+mcgOimgeWcqOmrmOa4qeS4i+aJjeiDveWPjeW6lO+8jOivtOaYjuivpeWPjeW6lOaYr+WQuOaUtueDremHj+eahO+8jOato+ehru+8mzxicj5C44CB56iA55uQ6YW45LiO5rCi5rCn5YyW6ZKg5Y+R55Sf5Lit5ZKM5Y+N5bqU77yM5pS+5Ye654Ot6YeP77yM6ZSZ6K+v77ybPGJyPkPjgIHplYHkuI7nqIDnm5Dphbjlj43lupTvvIzkvJrmlL7lh7rlpKfph4/nmoTng63vvIzplJnor6/vvJs8YnI+ROOAgeS4gOawp+WMlueis+eHg+eDp++8jOaYr+WPkeWFieWPkeeDreeahOWJp+eDiOawp+WMluWPjeW6lO+8jOmUmeivr+OAguaVhemAiUE=

2/5多选题

难度：

2.下列反应属于放热反应的是

A
B
C
D

正确答案：QyxE

5pys6aKY5Lit77yMQeOAgULku47lj43lupTmnaHku7bmnaXnnIvvvIzmmK/mmI7mmL7nmoTlkLjng63lj43lupTvvJs8YnI+6ICMQ+aYr+eHg+eDp+WPjeW6lO+8jOWxnuS6juaUvueDreWPjeW6lO+8jDxicj5E5bC9566h5rKh5pyJ5Y+N5bqU5p2h5Lu277yM5L2G5Lmf5piv5pS+54Ot5Y+N5bqU77yM5YGa5a6e6aqM5pe277yM6IO95piO5pi+5oSf6KeJ5Yiw6K+V566h5Y+R54Ot44CC

3/5单选题

难度：

3.物质发生变化时，常常会表现出吸热或放热现象，下列变化会吸热的是

A	干冰升华
B	氢氧化钠固体溶于水
C	镁和稀盐酸反应
D	天然气燃烧

正确答案：QQ==

QeOAgeW5suWGsOWNh+WNjuaYr+eUseWbuuaAgeWPmOaIkOawlOaAge+8jOWPmOWMlui/h+eoi+WQuOaUtueDremHj++8jOato+ehru+8mzxicj5C44CB5rCi5rCn5YyW6ZKg5Zu65L2T5rq25LqO5rC05ZCO5rq25ray5rip5bqm5Y2H6auY77yM6K+05piO6K+l5Y+Y5YyW5pS+5Ye654Ot6YeP77yM6ZSZ6K+v77ybPGJyPkPjgIHph5HlsZ7lkozphbjlj43lupTml7bmlL7lh7rng63ph4/vvIzmuKnluqbljYfpq5jvvIzplJnor6/vvJs8YnI+ROOAgeeJqei0qOeHg+eDp+aXtumDveS8muaUvuWHuueDremHj++8jOS6uuS7rOWIqeeUqOWPr+eHg+eJqeeHg+eDp+iOt+W+l+iDvemHj++8jOmUmeivr++8jjxicj7mlYXpgIlB77yO

4/5单选题

难度：

4.2006年5月24日，三峡大坝最后一仓混凝土（成分中含有氧化钙）开始浇筑．其水化过程的反应是CaO+H₂O=Ca（OH）₂，为了防止浇筑过程中混凝土水化放出的热量使坝体温度升高，技术人员在仓内埋设了许多管道，一旦温度升高，则通水冷却．下列说法中错误的是

A	混凝土的水化过程包含化学变化
B	混凝土是混合物
C	混凝土的水化过程中吸收热量
D	钢筋混凝土凝固以后才变得坚硬

正确答案：Qw==

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

5/5单选题

难度：

5.按如图所示装置进行实验．将胶头滴管中的水滴入瓶中，a、b处水面无明显变化．则瓶中固体为

A	烧碱
B	生石灰
C	食盐
D	硝酸铵

正确答案：Qw==

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