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Jun 23, 2022 · The definition of the term substance is an example of how chemistry has a specific definition for a word that is used in everyday language with a different, vaguer definition. Here, we will use the term substance with its strict chemical definition. Chemistry recognizes two different types of substances: elements and compounds.
Jan 30, 2023 · Selecting proper components for desired pH. Buffers function best when the pK a of the conjugate weak acid used is close to the desired working range of the buffer. This turns out to be the case when the concentrations of the conjugate acid and conjugate base are approximately equal (within about a factor of 10).
Jul 22, 2024 · Polymer, any of a class of natural or synthetic substances composed of very large molecules that are multiples of simpler chemical units. Polymers make up many of the materials in living organisms, and they constitute the basis of certain minerals and human-made materials, such as paper and plastics.
Isomerism in organic chemistry is a phenomenon shown by two or more organic compounds having the same molecular formula but different properties due to difference in arrangement of atoms along the carbon skeleton (structural isomerism) or in space (Stereo isomerism)
Jan 23, 2023 · Diastereomers vs. Enantiomers vs. Meso Compounds. Tartaric acid, C 4 H 6 O 6, is an organic compound that can be found in grape, bananas, and in wine. The structures of tartaric acid itself is really interesting.
Rough Endoplasmic Reticulum Definition and structure of rough ER: Rough ER is a type of endoplasmic reticulum that appears rough or granular under an electron microscope due to the presence of ribosomes attached to its surface.
Apr 16, 2018 · Mass number is an integer (whole number) equal to the sum of the number of protons and neutrons of an atomic nucleus. In other words, it is the sum of the number of nucleons in an atom.
