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.水和酒精充分混合后的体积小于水和酒精原来的体积之和，这表明（ ）
| A: 水和酒精的分子间有空隙 |
| B: 水和酒精的分子在作无规则运动 |
| C: 水和酒精的分子间存在扩散现象 |
| D: 水和酒精是由分子组成的 |
一次做对，真牛！
+5奖励规则>
- 提示1：5LuO5YiG5a2Q55qE5oCn6LSo6KeS5bqm6ICD6JmR77yM5YiG5a2Q6Ze05a2Y5Zyo6Ze06ZqU77yM5Y+v5Lul6YCa6L+H5a6P6KeC546w6LGh6KGo546w5Ye65p2l77yM5aaC5rCU5L2T5Y+v5Lul6KKr5Y6L57yp77yM5Lik56eN5LiN5ZCM55qE5ray5L2T5re35ZCI5ZCO5L2T56ev5Lya5Y+Y5bCP562JLg==
- 提示2：5LiN5ZCM5ray5L2T5re35ZCI5Zyo5LiA6LW377yM5ray5L2T5YiG5a2Q5Lya5aGr5YWF5Zyo56m66ZqZLg==
- 答案：QQ==
6YWS57K+5ZKM5rC06YO95piv55Sx5YiG5a2Q5p6E5oiQ55qE54mp6LSo77yM5a6D5Lus55qE5YiG5a2Q5LmL6Ze06YO95a2Y5Zyo5LiA5a6a55qE6Ze06ZqU77yO5b2T5oqK6YWS57K+5ZKM5rC05re35ZCI5Lul5ZCO77yM5Lik56eN54mp6LSo55qE5YiG5a2Q55u45LqS56m/5o+S5riX6YCP77yM6L+b5YWl5b285q2k55qE56m66ZqZ77yM5omA5Lul5oC75L2T56ev5Lya5bCP5LqO5LqM6ICF55qE5L2T56ev5LmL5ZKM77yO5pWF6YCJQe+8jg==
本课配套习题挑战模式2/5
单选题
难度系数：
2.对下列现象的解释，正确的是（ ）
| A: 稀饭煮开后，米粒在水中不停翻滚，说明分子不停在运动 |
| B: 封闭在容器内的液体很难被压缩，说明分子间有斥力 |
| C: 用手捏海绵，海绵的体积变小了，说明分子间有空隙 |
| D: 铅笔笔芯用了一段时间后变短了，说明分子间有斥力 |
一次做对，真牛！
+5奖励规则>
- 提示1：5YiG5a2Q5Yqo55CG6K6655qE5YaF5a6577ya54mp6LSo5piv55Sx5aSn6YeP5YiG5a2Q57uE5oiQ55qE77yM5YiG5a2Q5Zyo5rC45LiN5YGc5oGv5Zyw5YGa5peg6KeE5YiZ6L+Q5Yqo77yM5YiG5a2Q6Ze05a2Y5Zyo552A55u45LqS55qE5byV5Yqb5ZKM5pal5YqbLg==
- 提示2：5bCG5YiG5a2Q5Yqo55CG6K665ZKM55Sf5rS75a6e5L6L6IGU57O76LW35p2l6L+b6KGM5YiG5p6QLg==
- 答案：Qg==
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
本课配套习题挑战模式3/5
多选题
难度系数：
3.下列说法正确的是（ ）
| A:水很难被压缩是因为水分子间有斥力 |
| B: 水很难被压缩是因为水分子间无空隙 |
| C: 打开酒瓶能闻到酒香是扩散现象 |
| D: 打扫卫生时，教室内尘土飞扬是扩散现象 |
一次做对，真牛！
+5奖励规则>
- 提示1：5qC55o2u5YiG5a2Q5Yqo55CG6K6655qE5YaF5a655Zue562U77ya54mp6LSo6YO95piv55Sx5YiG5a2Q57uE5oiQ55qE77yM5YiG5a2Q5LmL6Ze05a2Y5Zyo56m66ZqZ77yM5bm25LiU5YiG5a2Q5Zyo5rC45LiN5YGc5oGv5Zyw5YGa5peg6KeE5YiZ6L+Q5Yqo77yM5YiG5a2Q5LmL6Ze05oC75a2Y5Zyo55u45LqS5L2c55So55qE5byV5Yqb5ZKM5pal5YqbLg==
- 答案：QSxD
54mp5L2T5b6I6Zq+6KKr5Y6L57yp77yM6K+05piO5YiG5a2Q6Ze05pyJ5pal5Yqb77yM5pWFQeato+ehru+8jELplJnor6/vvJvmiZPlvIDphZLnk7bog73pl7vliLDphZLpppnmmK/phZLnmoTliIblrZDml6Dop4TliJnov5DliqjnmoTnu5PmnpzvvIzlsZ7kuo7mianmlaPnjrDosaHvvIzmlYVD5q2j56Gu77yb5bCY5Zyf6aOe5oms5piv5b6u5bCP5Zu65L2T6aKX57KS55qE6L+Q5Yqo77yM5LiN5piv5YiG5a2Q55qE6L+Q5Yqo77yM5LiN5bGe5LqO5omp5pWj546w6LGh77yM5pWFROS4jeato+ehru+8m+aJgOS7peetlOahiOS4ukFD77yO
本课配套习题挑战模式4/5
单选题
难度系数：
4.铁块受热膨胀，是因为（ ）
| A: 铁的分子膨胀大 |
| B: 分子间的间隙增加 |
| C: 分子发生了扩散现象 |
| D: 分子运动的速度加大 |
一次做对，真牛！
+5奖励规则>
- 提示1：5qC55o2u54mp6LSo55qE5p6E5oiQ5ZKM5YiG5a2Q6L+Q5Yqo6K6655qE6KeC54K577ya5YiG5a2Q5Zyo5LiN5YGc5Zyw5YGa5peg6KeE5YiZ55qE6L+Q5Yqo77yM6ICM5LiU54mp6LSo55Sx5Zu65L2T5Yiw5ray5L2T5Yiw5rCU5L2T55qE5YiG5a2Q6L+Q5Yqo55qE6YCf5bqm5piv5L6d5qyh5aKe5aSn55qE77yb5YiG5a2Q6Ze05a2Y5Zyo55u45LqS55qE5byV5Yqb5ZKM5pal5Yqb77yM6ICM5LiU6YO95piv6ZqP552A5YiG5a2Q6Ze06Led56a755qE5aKe5aSn6ICM5YeP5bCP77yO
- 答案：Qg==
5LiA5YiH54mp6LSo6YO95piv55Sx5YiG5a2Q57uE5oiQ55qE77yM5YiG5a2Q5Zyo5LiN5YGc5Zyw6L+Q5Yqo77yM5b2T54mp5L2T5Y+X54Ot5pe277yM6I635b6X5LqG6IO96YeP77yM5LuO6ICM5L2/5YiG5a2Q55qE5peg6KeE5YiZ6L+Q5Yqo5Yqg5b+r77yM5YiG5a2Q6Ze06Led56a75Yqg5aSn77yO5Zug5q2k6ZOB5Z2X6Iao6IOA5piv55Sx5LqO5YiG5a2Q6Ze055qE6Ze06ZqZ5Y+Y5aSn77yO5pWF6YCJQu+8jg==
本课配套习题挑战模式5/5
单选题
难度系数：
5.一滴红墨水滴在一杯清水中，隔一段时间整杯水都变红，这个现象说明（ ）
| A: 组成物质的分子的体积非常小 |
| B: 分子永不停息地作无规则运动 |
| C: 分子之间有相互作用力 |
| D: 分子有一定的质量 |
一次做对，真牛！
+5奖励规则>
- 提示1：5aKo5rC05ZKM5riF5rC05Lik56eN54mp6LSo5b285q2k6L+b5YWl5a+55pa577yM6L+Z5piv5LiA56eN5omp5pWj546w6LGh77yO
- 提示2：5Lik56eN55u45LqS5o6l6Kem55qE54mp6LSo5b285q2k6L+b5YWl5a+55pa555qE546w6LGh5Y+r5omp5pWj77yM5omp5pWj546w6LGh6K+05piO5YiG5a2Q5LiN5YGc5Zyw5YGa5peg6KeE5YiZ6L+Q5Yqo77yO
- 答案：Qg==
5omp5pWj546w6LGh6K+05piO5YiG5a2Q5Zyo5rC45LiN5YGc5oGv5Zyw5YGa5peg6KeE5YiZ6L+Q5Yqo77yO5pWF6YCJQu+8jg==
