chemical change
Americannoun
Usage
What is a chemical change? A chemical change happens when one chemical substance is transformed into one or more different substances, such as when iron becomes rust.Chemical changes occur through the process of chemical reactions, and the resulting substances have different properties because their atoms and molecules are arranged differently.A chemical change is different from a physical change, which doesn’t rearrange atoms or molecules and produce a completely new substance. Ice melting into water is an example of a physical change.
Etymology
Origin of chemical change
First recorded in 1755–65
Compare meaning
How does chemical-change compare to similar and commonly confused words? Explore the most common comparisons:
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Their results, published in ACS Applied Materials and Interfaces, reveal that chemical changes linked to Alzheimer's are not confined to amyloid plaques.
From Science Daily
In certain scenarios, nearly half of the modeled particles transported newly created organic molecules from the broader protosolar nebula into Jupiter's circumplanetary disk, where they were incorporated into the growing moons with little chemical change.
From Science Daily
These factors influence how cells behave through subtle chemical changes known as epigenetic modifications.
From Science Daily
Genetic analysis revealed that the cyanobacteria responsible for producing this compound contain a unique set of genes linked to these chemical changes.
From Science Daily
This multi-institutional project, led by five research organizations, focuses on how chemical changes occur when air near the surface rises into the lower atmosphere.
From Science Daily
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
