物理性质:颜色,状态,气味,熔沸点,硬度,溶解性,密度,延展性,导电性等等
化学性质:酸碱性,氧化性还原性,可燃性,稳定性等等.
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- 1He is very a_______because he exercises every day.
- 2Did the girl and her mother live in a big house?
- 3有一个梯形,它上.下的比是4:9如果将上底增加11厘米,下底减少4厘米,就能成为一个正方形,求正方形面积?
- 4李华原计划12小时完成的工作,结果10小时就完成了,她的工作效率比原计划提高了_%
- 5已知m的平方+n的平方=6则代数式(3m的平方-4n的平方-mn)-(4m的平方-3n的平方-mn)=?
- 6少先队员采集树种.第一小队七人采集了八千克,第二小队六人采集了七千克.哪个小队平均每人采集的多.
- 7世界八大奇迹有万里长城吗
- 8Thanks for the people who were concerned to me when I got hurt是什么意思?
- 90.125的49次方乘以4的49次方减去9的999次方乘以3分之一的999次方
- 10Which is the biggest this desk or that desk?The building is much largest.改错