Elements consist of a single type of atom. For example, pure iron has only iron atoms. Compounds combine more than one type of atom, for example, iron and oxygen form a compound called iron oxide, also known as rust. Elements and compounds are alike because they cannot be separated into different materials by mechanical means, like filtering, magnetic separation or picking with tweezers. The are different in that element have only one kinds of atom, while compounds have two or more types of atoms. Even when you have material which is all one type of atom, such as a hydrogen gas cloud, a distinction is made between "elemental hydrogen", which is extremely reactive, and H2, which might need an outside source of energy to cause it to react with another element.
2006-11-08 14:16:09
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answer #1
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answered by PoppaJ 5
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Well, an element is a substance that can't be decomposed or changed into a different substance by normal chemical means.
A compound is a chemical combination of two or more elements that can't be separated by physical means.
2006-11-08 14:17:51
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answer #2
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answered by quite.atomic 1
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They are the same because they both have uniform properties. They are different because an element is composed entirely of identical atoms, while a compound is made of two or more different kinds of atoms.
2006-11-08 14:13:17
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answer #3
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answered by DavidK93 7
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Elements are made of atoms, so are compounds.
compounds have more than one atom, some elements are diatomic, more than one atom
Elements have symbols, compounds have formulas made of symbols
Atoms of elements and compounds react in chemical reactions
Elements and compounds can be solid liquid and gas
2006-11-08 14:17:35
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answer #4
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answered by science teacher 7
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