安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
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- Chemistry - Wikipedia
Chemistry, as a body of knowledge distinct from alchemy, became an established science with the work of Antoine Lavoisier, who developed a law of conservation of mass that demanded careful measurement and quantitative observations of chemical phenomena
- PubChem
Search and explore chemical information in the world's largest free chemistry database Search chemicals by name, molecular formula, structure, and other identifiers Find chemical and physical properties, biological activities, safety and toxicity information, patents, literature citations and more
- Chemistry | Definition, Topics, Types, History, Facts | Britannica
Chemistry is the science of the properties, composition, and structure of substances (defined as elements and compounds), the transformations they undergo, and the energy that is released or absorbed during these processes
- Chemistry archive | Science | Khan Academy
The chemistry archive contains legacy chemistry content, and is not being updated with new content For our most up-to-date, mastery-enabled courses, check out Middle School Chemistry, High School Chemistry and AP Chemistry!
- 1. 1: What is Chemistry? - Chemistry LibreTexts
Chemistry is the study of matter—what it consists of, what its properties are, and how it changes Being able to describe the ingredients in a cake and how they change when the cake is baked is called chemistry
- Chemistry - University of Cincinnati
The Chemistry Department proudly celebrates diversity within our research community, fostering an inclusive environment where diverse perspectives drive innovation and discovery Together, we advance science while embracing the unique contributions of every individual
- A to Z Chemistry Dictionary - Glossary of Chemistry Terms
Look up definitions of chemistry words in this comprehensive A to Z chemistry dictionary The glossary is organized alphabetically
- High school chemistry | Science | Khan Academy
Learn high school chemistry using videos, articles, and NGSS-aligned practice Explore the fundamentals of atomic structure, chemical bonding, chemical reactions, thermochemistry, solutions, acids and bases, and nuclear chemistry
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