'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 元素周期表 关于元素周期表可以每五种元素为一句去记忆。氢、氦、锂、铍、硼; 碳、...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 化学式的写法和读法 2.化合价 含义:由于形成化合物的元素有固定的原子个数比,所以...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 化合价之歌 氢氯钾钠一价银,二价氧钡钙镁锌, 三铝四硅磷五价,二四六硫都齐啦。谈...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 化学式 1.概念:用元素符号和数字表示物质组成的式子 【注意】每种纯净物的组成是固...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 常见有机物化学式...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 化学式表示的含义(一般包括宏观和微观) 化学式的含义以H2O为例宏观表示一种物质表示...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 常见离子的化合价...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 溶解度曲线是初中化学一个重要的知识点,从溶解度曲线中,我们既可以得到该物质在...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 溶解度和溶液组成知识的综合应用 【例5】某物质在20℃时的溶解度为20克,在20℃ 时将...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 灵活运用溶解度概念 解决结晶问题的计算 【例4】A、B两种化合物的溶解度曲线如图所示...