.下载后可自行编辑修改，页脚下载后可删除。七上科学第4章物质的特性综合检测卷请同学们注意：全卷共四大题，总分值100分，考试时间为80分钟。一、选择题(每题2分，计40分)1.以下现象中，能说明分子在不停地运动的是···················································()A.烟雾缭绕B.花香怡人C.雪花飘飘D.尘土飞扬2.一支蜡烛在燃烧的过程中············································································()A.质量减小，密度也减小B.体积减小，密度变大C.其质量改变，密度不变D.质量、体积均改变，故密度肯定改变3.如图中的情景不可能发生的是······································································()A.甲图：春天冰雪融化B.乙图：冬天的树上出现霜C.丙图：室外冰冻的衣服不会变干D.丁图：水烧开时冒出大量的“白气〞4.以下属于化学变化的是···············································································()A.冰山消融B.汽油挥发C.酿米成酒D.灯泡发光5.两盆水里面都有没熔化的冰块，一盆放在阳光下，一盆放在阴凉处，在盆内冰块均未熔化完前，两盆水的水温相比··········································································()A.在阴凉处的那盆水的温度高B.两盆水温度一样高C.在阳光下的那盆水的温度高D.无法确定6.以下不随温度的变化而变化的是···································································()A.红墨水在水中的扩散速度B.糖在水里的溶解速度C.酒精的蒸发速度D.酒精的沸点7.扇扇子会感到身上很凉爽和进入空调房感觉到凉爽分别是因为···························()A.扇来的风把身体周围的热空气赶跑，空调房没有热气B.扇来的风是凉的，空调的风把身上的热吹掉了C.扇来的风加快了身上汗液的蒸发，汗液蒸发时要吸热，空调房里本身温度低D.扇来的风把身上的热吹掉了，空调房内没有热气8.要使一个萝卜变咸，用“炒〞的方法比用“腌〞的方法快得多，这是因为············()A.在温度高时，分子运动得较慢B.在温度低时，分子运动得较快C.在温度高时，分子运动得较快D.在不同温度时，分子运动得一样快9.下面列举的语句都蕴含着深刻的哲理，如果从物理学角度来解读，也别有生趣，其中分析不正确的选项是······················································································()A.“只要工夫深，铁杵磨成针〞，此过程中铁棒的质量减少B.“蜡炬成灰泪始干〞，蜡烛燃烧时的体积减小C.“锲而不舍，金石可镂〞，镂后金石的密度不变D.“人往高处走，水往低处流〞，水流动的过程中密度减小.下载后可自行编辑修改，页脚下载后可删除。10.某同学要称量克食盐，1克以下用游码。其操作方法如下：①分别取10克、5克、2克砝码放右盘；②把太平放在水平台上，调节天平横梁平衡；③移动游码到克处；④左盘添加食盐到指针位于分度盘中央刻度线。其合理顺序是···································()A.①②④③B.②④③①C.②①③④D.②③④①11.冬天，小明从室外走进温暖的教室，他的眼镜片上出现了一层薄雾，一会儿薄雾又消失了。上述现象对应的物态变化是·································································()A.先凝固，后升华B.先液化，后汽化C.先凝固，后蒸发D.先凝华，后升华12....
