{"type":"rich","version":"1.0","title":"Y Raddfa pH: Asidau ac Alcalïau","description":"Deall y raddfa pH, asidau, alcalïau, a dangosyddion fel papur litmws a dangosydd cyffredinol.","author_name":"Padlet Arcade","thumbnail_url":"https://arcade.padlet.com/open-graph/social-preview-image.png?timestamp=1780948540058&hashid=YkK4V2bYjl","html":"<iframe src=\"https://arcade.padlet.com/embed/YkK4V2bYjl\" width=\"720\" height=\"480\" frameborder=\"0\" allowfullscreen></iframe>","width":720,"height":480,"provider_name":"Padlet Arcade","provider_url":"https://arcade.padlet.com"}