2019浙江省温州市中考化学真题及答案
2019浙江省温州市中考化学真题及答案学校:________班级:________姓名:________学号:________一、单选题(共5小题)1.银是一种银白色金属,密度较大,具有良好的导电性,长期放置会被氧化而发黑。其中属于银的化学性质的是( )A.银白色B.密度较大C.导电性良好D.能被氧化2.联合国把今年定为“元素周期表年”。俄国科学家门捷列夫对元素周期表的编制做出巨大贡献,人们将101号元素命名为“钔”来纪念他。钔原子的核电荷数为101,相对原子质量为258,则钔原子的质子数为( )A.101B.157C.258D.3593.如图,将红砂糖倒入一杯开水中,充分溶解。能作为判断...
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