Oct 15, 2023 · For example, pesticides in water or artificial colorings in food are “chemicals.” But, chemistry sees chemicals somewhat differently. A chemical is a substance with a specific …

5 days ago · Most of the materials that occur on Earth, such as wood, coal, minerals, or air, are mixtures of many different and distinct chemical substances. Each pure chemical substance (e.g., oxygen, …

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 …

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 …

Search chemicals by name, molecular formula, structure, and other identifiers. Find chemical and physical properties, biological activities, safety and toxicity information, patents, literature citations …

May 15, 2025 · Learn how to safely handle chemicals, the effects of certain toxins, which substances are controlled or managed, and safer alternatives.

The meaning of CHEMICAL is of, relating to, used in, or produced by chemistry or the phenomena of chemistry. How to use chemical in a sentence.

Aug 28, 2025 · Learn about 12 types of chemicals with examples, uses, and safety tips. Explore acids, bases, polymers, pharmaceuticals, and more in everyday life.

A chemical is any substance with a defined composition. Chemicals can be naturally occurring or manufactured. Some chemicals can produce odors while others may not. Some chemicals are toxic …

Many chemicals have a damaging effect on the environment. The chemical industry produces such things as petrochemicals, drugs, and rubber. Sodium chloride is the chemical name for common salt. …