化学方程式是表示化学变化的化学用语。关于化学方程式3Fe+2O2点燃Fe3O4的 发布时间:2017-07-16 22:38 │ 来源:www.tikuol.com 题型:选择题 问题: 化学方程式是表示化学变化的化学用语。关于化学方程式3Fe+2O2点燃Fe3O4的说法错误的是A.反应物都是单质B.生成物属于一种混合物C.属于氧化反应D.反应后固体物质质量增加
题型:选择题 Read and match. 根据问题选择合适答案。A. Lucy's. B. It's November 20th today. C. It's August 11th D. There are two birthdays in May. E. I'm sending an e-card. ( ) What are you doing?( ) What's the date today?( ) When is your birthday? ( ) Whose birthday is in July?( ) How many birthdays are there in May? 查看答案