A chemical substance is a form of matter having constant chemical composition and characteristic properties. Some references add that chemical substance cannot be separated into its constituent ...

Police released surveillance images Friday afternoon of an e-bike cyclist who assaulted a 17-year old cyclist in Central Park ...

Call or text 988 or chat at 988lifeline.org. This story discusses a specific means of suicide to help inform readers of the ...

Thousands of potentially toxic plastic chemicals can migrate from food processing and packaging into the human body, a new ...

Up to 3,600 different chemicals from food packaging—that’s how many substances have been identified in the human body.

New attention to trifluoracetic acid, or TFA, underscores the game of whack-a-mole that scientists and communities face with ...

Because substances are made up of different atoms and molecules, they react in characteristic ways. Production of a gas, color changes, a change in temperature, and the formation of a precipitate are ...

To promote voluntary improvement of management of chemical substances by business operators and to prevent any impediments to the preservation of the environment through the establishment of the ...

HERNDON, Va. (DC News Now) — Multiple people were evacuated from their homes on Friday after the Town of Herndon Police Department (HPD) discovered chemical substances during a search.

The diagrams show what happens when iron filings and sulfur powder react together in a chemical reaction, rather than just mix together. Joined or not The different substances are not chemically ...

These describe how a substance looks and behaves. There are two types of properties: physical and chemical. Watch this video about how physical and chemical properties affect which materials we ...

EPA Authors Describe Categorization Approach To PFAS To Identify Potential Candidates For Testing And Human Health ...