CaO有哪些化学性质?可以与哪些物质发生反应?写出对应的化学方程式. ____、____ 等,尝试归纳金属氧化物的通性:____ .
—Tom wants to know if you _______ a picnic next Sunday
—Yes. But if it __________ , we’ll visit the museum instead
①Al,Fe ②Cl2,S ③Mg,C ④H2,Cu ⑤C,Si.