CK-12 Chemistry for High School
https://flexbooks.ck12.org/cbook/ck-12-chemistry-flexbook-2.0/
By CK-12 | Last Modified: Sep 09, 2023
Published
CK-12
Chemistry for High School FlexBook® covers core chemistry concepts and
includes SIMs, PLIX, real world examples, and videos.
Terms of Use-----It seems that those book are not openly licensed 看起來可能不是自由授權
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High School Chemistry
https://en.m.wikibooks.org/wiki/High_School_Chemistry
Content is available under CC BY-SA 4.0 unless otherwise noted.
---但內容太多。以網頁形式呈現---將嘗試雙語翻譯
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https://open.umn.edu/opentextbooks/textbooks/22
--- 855 pages---too many
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https://batch.libretexts.org/print/Letter/Finished/chem-79527/Full.pdf
---just 142 pages-----good
