Watch the stroke order, then trace it yourself.


acetaldehyde
formaldehyde
phenolic resin; phenol-formaldehyde
aldehyde group
benzaldehyde
Acetaldehyde is a common organic compound.
New furniture may contain formaldehyde.
Formaldehyde is a common chemical substance.
Scientists are studying the reactions of aldehyde groups.
This phenolic plastic can be used to make electrical parts.
Explore characters by relationship
Characters pronounced "quan".
Characters with radical "酉".