Chemical substance
matter of constant composition best characterized by the entities (molecules, formula units, atoms) it is composed of and characterized by physical properties like density
A chemical substance is any material with a known chemical composition.[1] For example, water has the same properties and the same ratio of hydrogen to oxygen whether it came from a river or was made in a laboratory. Typical chemical substances found in the home include water, salt (sodium chloride) and bleach. Generally, substances exist as a solid, a liquid, or a gas, and may change between these phases of matter when there are changes in temperature or pressure.
Gallery
- White sodium chloride
- Pink hydrated (with water) manganese (II) chloride
- Brown manganese (II) carbonate
- Black copper (II) oxide
- Red hydrated (with water) cobalt (II) chloride
- Orange potassium dichromate
- Yellow sodium chromate
- Green hydrated (with water) copper (II) chloride
- Blue hydrated (with water) copper(II) sulfate
- Purple anhydrous (without water) chromium (III) chloride
References
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