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A pure substance always has a definite and constant composition. A mixture is a physical combination of two or more pure substances in which each substance retains its own chemical identity. A pure substance is a single substance on its own. Elements and compounds are pure substances, but mixtures are not. Compounds are very different from the ...
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Oct 24, 2020 · In chemistry, a compound is a substance made of two or more elements chemically bonded to each other in a fixed ratio. The chemical bonds between atoms of elements involve a transfer or sharing of valence of electrons. This give a compound different properties from its elements. A compound may be represented by a chemical formula that shows the ...
However, the definition of a pure substance is more narrow in chemistry. In chemistry, a pure substance has a constant chemical composition. No matter where you sample a substance, it is the same. For chemistry homework, the safest examples of pure substances are elements and compounds. So, examples include gold, silver, helium, sodium chloride ...
In chemistry, a pure substance is a single substance made of only one type of particle. impurity A substance that consists of more than one element or compound. substance Matter made of a fixed ...
Compound Definition: Compounds – Compounds are chemical substances made up of two or more elements that are chemically bound together in a fixed ratio. Chemistry is the study of the structures, physical properties, and chemical properties of material substances. It is very important to understand that all gases, liquids and solids are not the ...
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- C2H6O
- A compound is a material formed by chemically bonding two or more chemical elements. The type of bond keeping elements in a compound together may v...
- A compound is a material composed of two or more components. Water, carbon dioxide and table salt are some examples of compounds.
- There are two basic groups of compounds. We are characterized by the way the atoms in the compound bind to each other. Such two types are called “m...
- A material that can not be separated by chemical means into simpler substances. Each element consists of atoms with the same atomic number, that is...
- A component is a single material that can not be divided into various types of substances. Carbon, oxygen, hydrogen, gold, silver and iron are exam...
- A material that only consists of one form of atom. Compound: A material which consists of more than one form of bonded atom. Mixture: a blend of tw...
- Two major groups can be divided into mixtures: homogeneous and heterogeneous. A homogeneous mixture is one in which the entire composition of its e...
- The same number of protons and electrons would be found in a single atom and most atoms contain at least as many neutrons as protons. An element is...
Aug 23, 2019 · A pure substance is a form of matter that has a constant composition and properties that are constant throughout the sample. Mixtures are physical combinations of two or more elements and/or compounds. Mixtures can be classified as homogeneous or heterogeneous. Elements and compounds are both examples of pure substances.
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close. compound A pure substance made from two or more elements which are chemically bonded in a fixed ratio. and. mixtures. close. mixture When two or more compounds or elements are present ...
