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- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/01%3A_The_Chemical_Basis_of_Life/1.01%3A_Mixtures_and_CompoundsThis page explains the differences between mixtures and compounds, highlighting that mixtures are heterogeneous and can be separated easily, while compounds are homogeneous with fixed element proporti...This page explains the differences between mixtures and compounds, highlighting that mixtures are heterogeneous and can be separated easily, while compounds are homogeneous with fixed element proportions that do not retain individual properties. Techniques like dialysis and chromatography separate mixture components, with pure substances being elements or compounds that cannot be broken down.
- https://bio.libretexts.org/Courses/Cuyahoga_Community_College/Bio_1110%3A_Biological_Fundamentals/03%3A_Chemistry_Makes_Life_Possible/3.01%3A_Basic_DefinitionsChemistry is the study of matter and its interactions with other matter and energy. Matter is anything that has mass and takes up space. Matter can be described in terms of physical properties and che...Chemistry is the study of matter and its interactions with other matter and energy. Matter is anything that has mass and takes up space. Matter can be described in terms of physical properties and chemical properties. Physical properties and chemical properties of matter can change. Matter is composed of elements and compounds. Combinations of different substances are called mixtures. Elements can be described as metals, nonmetals, and semimetals.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/01%3A_The_Chemical_Basis_of_LifeThis page covers essential chemistry principles in modern biology, focusing on mixtures, compounds, elements, atoms, and chemical bonds, including electronegativity and noncovalent bonds. It addresses...This page covers essential chemistry principles in modern biology, focusing on mixtures, compounds, elements, atoms, and chemical bonds, including electronegativity and noncovalent bonds. It addresses hydrogen bonds and the concepts of acids and bases while defining molecular weight and its measurement unit (dalton), exemplified by water's molecular weight of 18 daltons.
