求英语科学题目(注意是英语!!!)的第45题和第47题全部题目!!在线等啊...

发布网友发布时间：2024-10-24 15:52

共2个回答

热心网友时间：2024-10-24 17:37

45. 1 Metal: Metals are usually inclined to lose electron and react with oxygen in the air to form oxides. Metals in general have high electrical conductivity, high thermal conductivity, and high density.
2 Metalloid: Metalloids usually look like metals but behave largely like nonmetals. They are shiny, brittle and have relatively good electrical conductivity.They can form alloys with metals.
3 Nonmetal: Nonmetals mostly lack metallic attributes and tend to be highly volatile. They have low elasticity, and are good insulators of heat and electricity.

热心网友时间：2024-10-24 17:40

这是考化学元素周期表的知识呀

声明：本网页内容为用户发布，旨在传播知识，不代表本网认同其观点，若有侵权等问题请及时与本网联系，我们将在第一时间删除处理。
E-MAIL:11247931@qq.com