中学生网络课堂本课配套习题挑战模式1/5
单选题
难度系数：
1.判断物质的变化是物理变化还是化学变化的主要依据是
| A: 有无形态变化 |
| B: 有无发热发光现象 |
| C: 有无新物质生成 |
| D: 有无颜色变化 |
一次做对，真牛！
+5奖励规则>
- 提示1：5Zyo5YyW5a2m5Y+Y5YyW5Lit6L+Y5Ly06ZqP5Y+R55Sf5LiA5Lqb546w6LGh77yM5aaC5pS+54Ot44CB5Y+R5YWJ44CB5Y+Y6Imy44CB5pS+5Ye65rCU5L2T44CB55Sf5oiQ5rKJ5reA562J562J
- 提示2：5YyW5a2m5Y+Y5YyW55qE5pys6LSo54m55b6B5Zyo5LqO5piv5pyJ5paw54mp6LSo55Sf5oiQ
- 提示3：5Zug5q2k5pyJ6L+Z5Lqb546w6LGh5pe25bm25LiN5LiA5a6a5Y+R55Sf5LqG5YyW5a2m5Y+Y5YyW77yO
- 答案：Qw==
5YyW5a2m5Y+Y5YyW55qE5pys6LSo54m55b6B5piv5Lqn55Sf5paw54mp6LSo77yM6ICM6aKc6Imy5Y+Y5YyW44CB5Y+R5YWJ44CB5pS+54Ot44CB5Lqn55Sf5rCU5L2T5ZKM55Sf5oiQ5rKJ5reA5Lul5Y+K54q25oCB5Y+Y5YyW562J6YO95LiN6IO96K+05piO5Lqn55Sf5LqG5paw54mp6LSo77yM5Zug5q2k5Yik5pat5Y+R55Sf5YyW5a2m5Y+Y5YyW55qE5L6d5o2u5piv5pyJ5paw54mp6LSo55Sf5oiQ77yO
本课配套习题挑战模式2/5
单选题
难度系数：
2.下列变化属于化学变化的是
| A: 冰棒融化 |
| B: 铁丝燃烧 |
| C: 自行车爆胎 |
| D: 湿衣服晾干 |
一次做对，真牛！
+5奖励规则>
- 提示1：5YyW5a2m5Y+Y5YyW5piv5oyH5pyJ5paw54mp6LSo55Sf5oiQ55qE5Y+Y5YyW77yM54mp55CG5Y+Y5YyW5piv5oyH5rKh5pyJ5paw54mp6LSo55Sf5oiQ55qE5Y+Y5YyW
- 提示2：5YyW5a2m5Y+Y5YyW5ZKM54mp55CG5Y+Y5YyW55qE5pys6LSo5Yy65Yir5piv5ZCm5pyJ5paw54mp6LSo55Sf5oiQ
- 答案：Qg==
QeOAgeWGsOajkuiejeWMlui/h+eoi+S4reWPquaYr+eKtuaAgeWPkeeUn+aUueWPmO+8jOayoeacieaWsOeJqei0qOeUn+aIkO+8jOWxnuS6jueJqeeQhuWPmOWMlu+8jjxicj5C44CB6ZOB5Lid54eD54On6L+H56iL5Lit5pyJ5paw54mp6LSo5Zub5rCn5YyW5LiJ6ZOB55Sf5oiQ77yM5bGe5LqO5YyW5a2m5Y+Y5YyW77yOPGJyPkPjgIHoh6rooYzovabniIbog47ov4fnqIvkuK3msqHmnInmlrDnianotKjnlJ/miJDvvIzlsZ7kuo7niannkIblj5jljJbvvI48YnI+ROOAgea5v+iho+acjeaZvuW5sui/h+eoi+S4reWPquaYr+eKtuaAgeWPkeeUn+aUueWPmO+8jOayoeacieaWsOeJqei0qOeUn+aIkO+8jOWxnuS6jueJqeeQhuWPmOWMlu+8jg==
本课配套习题挑战模式3/5
单选题
难度系数：
3.物质发生化学变化时，一定有
| A: 颜色变化 |
| B: 状态变化 |
| C: 发光发热 |
| D: 新物质生成 |
一次做对，真牛！
+5奖励规则>
- 提示1：5YyW5a2m5Y+Y5YyW55qE5pys6LSo54m55b6B5piv5pyJ5paw54mp6LSo55Sf5oiQ
- 提示2：5YyW5a2m5Y+Y5YyW5Y+v6IO95Zue5Ly06ZqP5YW25LuW5Y+Y5YyW44CC
- 答案：RA==
5YyW5a2m5Y+Y5YyW5Lit57uP5bi45Ly05pyJ5pS+54Ot44CB5Y+R5YWJ44CB5Y+Y6Imy44CB5pS+5Ye65rCU5L2T44CB55Sf5oiQ5rKJ5reA562J77yb5L2G5bm25LiN5piv5Lu75L2V5YyW5a2m5Y+Y5YyW6YO95LiA5a6a5pyJ5q2k546w6LGh77yM5L2G54mp6LSo5Y+R55Sf5YyW5a2m5Y+Y5YyW5pe25LiA5a6a5Lya55Sf5oiQ5paw54mp6LSo77yO
本课配套习题挑战模式4/5
单选题
难度系数：
4.下列属于物理变化的是
| A: 干冰升华 |
| B: 铝箔发暗 |
| C: 烧碱变质 |
| D: 镁带变黑 |
一次做对，真牛！
+5奖励规则>
- 提示1：5Yik5pat5Y+N5bqU5piv5ZCm5piv5YyW5a2m5Y+Y5YyW55qE5ZSv5LiA5qCH5YeG5piv4oCc5piv5ZCm5pyJ5paw54mp6LSo55Sf5oiQ4oCd44CC
- 提示2：5rOo5oSP54q25oCB55qE5pS55Y+Y5LiN5bGe5LqO55Sf5oiQ5paw54mp6LSo
- 答案：QQ==
QeOAgeW5suWGsOWNh+WNjuWPquaYr+S6jOawp+WMlueis+eahOeKtuaAgeWPkeeUn+S6huaUueWPmO+8jOayoeacieaWsOeJqei0qOeUn+aIkO+8jOWxnuS6jueJqeeQhuWPmOWMlu+8mzxicj5C44CB6ZOd566U5Y+R5pqX6K+05piO6ZOd5ZKM5rCn5rCU5Y+R55Sf5LqG5YyW5a2m5Y+N5bqU77yM55Sf5oiQ5LqG5paw54mp6LSo77ybPGJyPkPjgIHng6fnorHlj5jotKjnmoTov4fnqIvkuK3mnInmlrDnianotKjnlJ/miJDvvIzlsZ7kuo7ljJblrablj5jljJbvvJs8YnI+ROOAgemVgeW4puWPmOm7keeahOi/h+eoi+S4reacieaWsOeJqei0qOeUn+aIkO+8jOWxnuS6juWMluWtpuWPmOWMlu+8jjxicj7mlYXpgIlB77yO
本课配套习题挑战模式5/5
单选题
难度系数：
5.关于物质的变化，说法正确的是
| A: 物质发生化学变化一定会发光 |
| B: 物质的状态变化了一定是因为发生了化学变化 |
| C: 加热双氧水产生了水是物理变化 |
| D: 氧气在-183℃变成液体是一种物理变化 |
一次做对，真牛！
+5奖励规则>
- 提示1：5YyW5a2m5Y+Y5YyW5piv5oyH5pyJ5paw54mp6LSo55Sf5oiQ55qE5Y+Y5YyW77yM54mp55CG5Y+Y5YyW5piv5oyH5rKh5pyJ5paw54mp6LSo55Sf5oiQ55qE5Y+Y5YyW
- 提示2：5YyW5a2m5Y+Y5YyW5ZKM54mp55CG5Y+Y5YyW55qE5pys6LSo5Yy65Yir5piv5ZCm5pyJ5paw54mp6LSo55Sf5oiQ
- 提示3：5YyW5a2m5Y+Y5YyW5Lit5bi45bi45Ly06ZqP552A5Y+R5YWJ44CB5pS+54Ot44CB55Sf5oiQ5rCU5L2T562J546w6LGh
- 答案：RA==
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
