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.混合物和纯净物的主要区别是构成其分子的
| A: 状态不同 |
| B: 数量不同 |
| C: 质量不同 |
| D: 种类是一种还是几种 |
一次做对，真牛！
+5奖励规则>
- 提示1：57qv5YeA54mp5piv5oyH5Y+q55Sx5LiA56eN54mp6LSo57uE5oiQ77yM6ICM5re35ZCI54mp5piv5oyH5Lik56eN5oiW5Lik56eN5Lul5LiK55qE54mp6LSo57uE5oiQ77yO
- 答案：RA==
5re35ZCI54mp5ZKM57qv5YeA54mp55qE5Li76KaB5Yy65Yir5piv5p6E5oiQ5YW25YiG5a2Q55qE56eN57G75piv5LiA56eN6L+Y5piv5Yeg56eN77yM5pWF6YCJ5oupROmhueOAgg==
本课配套习题挑战模式2/5
单选题
难度系数：
2.下列物质中，属于纯净物的是
| A: 太子奶 |
| B: 鲜橙汁 |
| C: 豆浆 |
| D: 冰水共存物 |
一次做对，真牛！
+5奖励规则>
- 提示1：57qv5YeA54mp5piv5oyH5Y+q55Sx5LiA56eN54mp6LSo57uE5oiQ77yM6ICM5re35ZCI54mp5piv5oyH5Lik56eN5oiW5Lik56eN5Lul5LiK55qE54mp6LSo57uE5oiQ77yO
- 提示2：5LiA6Iis55Sf5rS75Lit55qE54mp6LSo5aSn5aSa5piv5re35ZCI54mp77yM5peg5rOV5YGa5Yiw57ud5a+557qv5YeA44CC
- 答案：RA==
QeOAgeWkquWtkOWltuS4reWQq+acieibi+eZvei0qOOAgeawtOetieeJqei0qO+8jOWxnuS6jua3t+WQiOeJqe+8juaVhemUmeivr++8mzxicj5C44CB6bKc5qmZ5rGB5ZCr5pyJ5rC077yM57OW5YiG44CB57u055Sf57Sg562J5bGe5LqO5re35ZCI54mp77yO5pWF6YCJ6aG56ZSZ6K+v77ybPGJyPkPjgIHosYbmtYbkuK3lkKvmnInmsLTlkozom4vnmb3otKjnrYnnianotKjvvIzlsZ7kuo7mt7flkIjnianvvI7mlYXpgInpobnplJnor6/vvJs8YnI+ROOAgeWGsOawtOWFseWtmOeJqeaYr+eUseS4gOenjeeJqei0qOe7hOaIkOeahOWxnuS6jue6r+WHgOeJqe+8jOaVhUTmraPnoa7vvI48YnI+5pWF6YCJRO+8jg==
本课配套习题挑战模式3/5
单选题
难度系数：
3.下列物质都属于纯净物的一组是①冰水混合物 ②洁净的空气 ③液氮 ④石灰水．
| A: ①③ |
| B: ②④ |
| C: ①② |
| D: ③④ |
一次做对，真牛！
+5奖励规则>
- 提示1：57qv5YeA54mp5piv55Sx5LiA56eN54mp6LSo57uE5oiQ55qE54mp6LSo77yM5re35ZCI54mp5piv55Sx5aSa56eN54mp6LSo57uE5oiQ55qE54mp6LSo
- 答案：QQ==
4pGg5Yaw5rC05re35ZCI54mp5Lit5Y+q5ZCr5pyJ5rC05LiA56eN54mp6LSo77yM5bGe5LqO57qv5YeA54mp77yOPGJyPuKRoea0geWHgOeahOepuuawlOS4reWQq+acieawruawlOOAgeawp+awlOOAgeS6jOawp+WMlueis+etieWkmuenjeeJqei0qO+8jOWxnuS6jua3t+WQiOeJqe+8jjxicj7ikaLmtrLmsK7kuK3lj6rlkKvmnInmtrLmgIHnmoTmsK7msJTkuIDnp43nianotKjvvIzlsZ7kuo7nuq/lh4DnianvvI48YnI+4pGj55+z54Gw5rC05Lit5ZCr5pyJ5rC044CB5rCi5rCn5YyW6ZKZ562J77yM5bGe5LqO5re35ZCI54mp77yOPGJyPuaVheKRoOKRoumDveWxnuS6jue6r+WHgOeJqe+8jjxicj7mlYXpgInvvJpB77yO
本课配套习题挑战模式4/5
单选题
难度系数：
4.下列物质中属于纯净物的是
| A: 纯净的空气 |
| B: 纯净的氮气 |
| C: 盐酸 |
| D: 碘酒 |
一次做对，真牛！
+5奖励规则>
- 提示1：57qv5YeA54mp5piv55Sx5LiA56eN54mp6LSo57uE5oiQ55qE54mp6LSo77yM5re35ZCI54mp5piv55Sx5aSa56eN54mp6LSo57uE5oiQ55qE54mp6LSo
- 答案：Qg==
QeOAgee6r+WHgOeahOepuuawlOS4reacieawp+awlOOAgeawruawlOetieeJqei0qO+8jOWxnuS6jua3t+WQiOeJqe+8jOaVhemAiemhuemUmeivr++8mzxicj5C44CB57qv5YeA55qE5rCu5rCU77yM5bGe5LqO57qv5YeA54mp5Lit55qE5Y2V6LSo77yM5pWF6YCJ6aG55q2j56Gu77ybPGJyPkPjgIHnm5DphbjmmK/msK/ljJbmsKLlkozmsLTnmoTmt7flkIjnianvvIzmlYXpgInpobnplJnor6/vvJs8YnI+ROOAgeeimOmFkuaYr+eimOWSjOmFkueyvueahOa3t+WQiOeJqe+8jOaVhemAiemhuemUmeivr++8mzxicj7mlYXpgIlC
本课配套习题挑战模式5/5
单选题
难度系数：
5.水是生命的源泉，下列“水”中属于纯净物的是
| A: 雨水 |
| B: 自来水 |
| C: 蒸馏水 |
| D: 矿泉水 |
一次做对，真牛！
+5奖励规则>
- 提示1：5aSn5aSa5pWw55Sf5rS75a6e6ZmF5Lit55qE54mp6LSo6YO95piv5re35ZCI54mp77yM5rKh5pyJ5Yqe5rOV5YGa5Yiw57ud5a+557qv5YeA44CC
- 答案：Qw==
QeOAgembqOawtOS4reWQq+acieawtO+8jOi/mOWQq+acieWFtuWug+eahOadgui0qO+8jOaJgOS7peWxnuS6jua3t+WQiOeJqe+8mzxicj5C44CB6Ieq5p2l5rC05Lit5ZCr5pyJ5rC05ZKM55+/54mp6LSo562J54mp6LSo77yM5bGe5LqO5re35ZCI54mp77ybPGJyPkPjgIHokrjppo/msLTkuK3lj6rmnInmsLTkuIDnp43nianotKjnu4TmiJDvvIzlsZ7kuo7nuq/lh4DnianvvJs8YnI+ROOAgeefv+azieawtOS4reWQq+acieawtOWSjOWkmuenjeefv+eJqei0qO+8jOWxnuS6jua3t+WQiOeJqe+8jjxicj7mlYXpgInvvJpD77yO
