If you cannot find the specific Dinan/Dingrando PDF, consider these free, legal, and high-quality alternatives that cover the same "Materia y Cambio" curriculum:
Change is an integral concept in chemistry. Chemical changes involve the transformation of one substance into another, which means new substances with different properties are formed. This is often accompanied by changes that cannot be easily reversed, such as changes in energy, color, or the release of gas. Physical changes, on the other hand, do not alter the chemical makeup of a substance but change its form, like ice melting to water. If you cannot find the specific Dinan/Dingrando PDF,
There is a possibility your search query had a typo. is very close to "Degrado" or "Harris" (a famous author for Quantitative Chemical Analysis). Physical changes, on the other hand, do not
Try the OpenStax Spanish version. It is likely much higher quality and safer than a random Google Drive link. Try the OpenStax Spanish version