Learn about igneous rocks in geology, including their origin, properties, and classification. Get examples and identification tips. Igneous Rocks – Types, Properties, and Examples This entry was posted on January 31, 2024 by Anne Helmenstine (updated on April 12, 2025)
Learn about chloroplasts in cells. Get the chloroplast definition and diagram and learn about the function of this important organelle. Chloroplast Function, Definition, and Diagram This entry was posted on January 29, 2024 by Anne Helmenstine (updated on March 10, 2026)
Get samarium facts. Learn about the properties, uses, and sources of the the lanthanide with symbol Sm and atomic number 62. Samarium Facts – Sm or Atomic Number 62 This entry was posted on January 28, 2024 by Anne Helmenstine (updated on February 4, 2024)
Learn about the dehydration reaction or dehydration synthesis reaction in chemistry. Get the definition, examples, and identification tips. Dehydration Reaction – Definition and Examples This entry was posted on January 27, 2024 by Anne Helmenstine (updated on March 10, 2026)
Learn about macromolecules in chemistry and biology. Get the macromolecule definition, types, and examples. Macromolecules – Definition, Types, Examples This entry was posted on January 24, 2024 by Anne Helmenstine (updated on March 10, 2026)
Learn about mitochondria in cells. Get the definition and mitochondrion diagram. Learn about the structure and functions. Mitochondria – Definition, Structure, Function This entry was posted on January 23, 2024 by Anne Helmenstine (updated on October 21, 2025)
Get the buffer definition and examples in chemistry. Learn how to choose buffers and calculate their pH range. Buffer Definition and Examples in Chemistry This entry was posted on January 21, 2024 by Anne Helmenstine (updated on January 29, 2024)
Get palladium facts. Learn about element Pd or atomic number 46, including its properties, uses, isotopes, and sources. Palladium Facts – Pd or Atomic Number 46 This entry was posted on January 20, 2024 by Anne Helmenstine (updated on January 29, 2024)
Get the ceramic definition and examples in engineering and materials science. Learn about the properties and uses of ceramics. Ceramic Definition and Examples This entry was posted on January 17, 2024 by Anne Helmenstine (updated on May 9, 2026)