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- What Is a Chemical? Definition and Examples - Science Notes and Projects
Chemicals come in various forms depending on their composition, structure, and how they interact with other substances Understanding the main types of chemicals helps classify the substances we encounter in the lab, in industry, and in everyday life
- PubChem
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
- 12 Types of Chemicals Explained | Uses, Examples Safety Tips
Learn about 12 types of chemicals with examples, uses, and safety tips Explore acids, bases, polymers, pharmaceuticals, and more in everyday life
- Substance (chemistry) - Wikipedia
Chemical substances can exist in several different physical states or phases (e g solids, liquids, gases, or plasma) without changing their chemical composition Substances transition between these phases of matter in response to changes in temperature or pressure
- Chemicals, Pesticides and Toxics Topics | US EPA
Learn how to safely handle chemicals, the effects of certain toxins, which substances are controlled or managed, and safer alternatives
- Chemistry - Wikipedia
Examples include extracting metals from ores, making pottery and glazes, fermenting beer and wine, extracting chemicals from plants for medicine and perfume, rendering fat into soap, making glass, and making alloys like bronze
- What is a Chemical ? | Nuclear Regulatory Commission - NRC
Chemical changes are different from physical changes, which don't result in a change in substances One example of a physical change is when water freezes into ice While ice may have different physical properties, it is still just water Another example is when you dissolve salt into a cup of water
- List of Chemical Compounds - 33Science
Everyday life and scientific work both rely on a surprising variety of chemicals — in kitchens, gardens, factories and classrooms A compact, well-organized list makes it easier to spot familiar substances, compare properties, and understand common uses without wading through dense technical texts
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