Lớp 12

Các bài giảng, lý thuyết, chuyên đề và bài tập đề thi các môn học từ Toán, Văn, Anh, Lý, Hoá, Sinh, Sử, Địa, GDCD,… lớp 12 được soạn kĩ lưỡng và dễ hiểu nhất trên Lecttr

Bài 21: Điều chế kim loại

<img alt='' data-srcset="https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset="https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' srcset="https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by nnquin Tháng Bảy 17, 2019

Bài 20: Sự ăn mòn kim loại

<img alt='' data-srcset="https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset="https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' srcset="https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by nnquin Tháng Bảy 17, 2019

Chương 5: Đại cương về kim loại

Bài 19: Hợp kim

<img alt='' data-srcset="https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset="https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' srcset="https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by nnquin Tháng Bảy 17, 2019

Bài 17: Vị trí của kim loại trong bảng tuần hoàn và cấu tạo của kim loại

<img alt='' data-srcset="https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset="https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' srcset="https://secure.gravatar.com/avatar/d056fca4b299856ba544b52806e3d568?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by nnquin Tháng Bảy 16, 2019

Chương 2

Bài 6: Saccarozơ và Mantozơ; Tinh bột và Xenlulozơ (P1)

<img alt='' data-srcset="https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset="https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' srcset="https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by Lotuss Tháng Bảy 15, 2019

Bài 2: Lipit

<img alt='' data-srcset="https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset="https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' srcset="https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by Lotuss Tháng Bảy 14, 2019

Bài 11: Peptit & Ptotein

<img alt='' data-srcset="https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset="https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' srcset="https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by Lotuss Tháng Bảy 12, 2019

Bài 5: Glucozơ

<img alt='' data-srcset="https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset="https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" height='60' width='60' data-src='https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' class='avatar avatar-60 photo avatar-img lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=60&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g' srcset="https://secure.gravatar.com/avatar/5e63f900d48cd080d04a0a5be2b271de?s=120&d=https%3A%2F%2Flecttr.com%2Fwp-content%2Fuploads%2F2019%2F07%2Fcropped-lecttr-icon-square-270x270.png&r=g 2x" class='avatar avatar-60 photo avatar-img' height='60' width='60' />

Written by Lotuss Tháng Bảy 12, 2019

Bài 1,2,3: Số phức

Written by davidle2810 Tháng Sáu 18, 2019

Chương 3: Hệ sinh thái, sinh quyển và bảo vệ môi trường

Bài 45: Dòng năng lượng trong hệ sinh thái và hiệu suất sinh thái

Written by thinhdeeptry Tháng Sáu 8, 2019