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Chemical substance


A chemical substance is a form of matter that has constant chemical composition and ... there are exceptions to this definition; a pure substance can also be defined as a form of matter that has bot...

The Law of Definite Composition - Boundless


The law of definite composition has applications to both molecular compounds with a fixed composition and ionic compounds as they require certain ratios to ...

Any substance that has a definite composition - Answers.com


Chemical ... Any matter that has a fixed composition and definite properties? ... A substance has a specific chemical composition while mixtures contain more ...

Law of definite composition - Dictionary.com


Law of definite composition definition, Chemistry. the statement that in a pure ... This small mark has two primary uses: to signify possession or omitted letters.

States of Matter - Chemistry


Changes in the temperature, pressure or composition can result in changes of state. Macroscopic Definitions. Gas Has no definite shape or volume, easily ...

Chemical formula arithmetic - Chem1


Apr 25, 2016 ... Since every unique chemical substance has a definite composition, every such substance must be describable by a chemical formula. Problem ...

What is a Substance ? : School Chemistry - IvyRose Holistic


A substance is a form of matter that has constant chemical composition and ... but not to a mixture because a "substance" always has a definite composition.

Law of Definite Proportion Examples - YourDictionary


The law of definite proportions is a law of science that says that a chemical ... An oxygen atom has an atomic mass of 16, while a hydrogen atom has an atomic ...

Dictionary L


Law of Definite Composition. States a pure compound has a fixed and invariable composition. It was discovered by a French chemist, Joseph Louis Prout ...

Law of Constant Composition Definition - Chemistry - About.com


Jun 16, 2016 ... Understand the Law of Constant Composition (Law of Definite ... As: Law of Definite Proportions, Law of Definite Composition, or Proust's Law ...

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What are substances with a definite composition? - Quora


Apr 6, 2016 ... The law of definite composition states that chemical compounds are composed of ... What is matter that has a uniform and definite composition?

Classifications of Matter


A solid has both a definite shape and a definite volume: It is rigid. ... as a substance) is matter that has distinct properties and a composition that doesn't vary from ...

How to Distinguish Pure Substances and Mixtures - For Dummies


A pure substance has a definite and constant composition — like salt or sugar. A pure substance can be either an element or a compound, but the composition ...