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| is the guy that defined the term element in the 1600's. |
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| are the symbols for the elements on the periodic table |
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| law of constant composition |
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Definition
| means that a given compound always has the same composition |
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Definition
1. elements are made of tiny particles called atoms
2. all atoms of a given element are identical
3. The atoms of a given element are different from those of any other element.
4. Atoms of one element can combine with atoms of elements to form compounds. A given compound always has the same relative numbers and types of atoms
5. Atoms are indivisible in chemical processes. That is, atoms are not created or destroyed in chemical reactions. A chemical reaction simply changes the way the atoms are grouped together. |
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| is a distinct substance that is composed of the atoms of two or more elements and always contains exactly the same relative masses of those elements. |
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| represents the type and number of atoms of a given compound |
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| was a scientist that found out that atoms had negative particles(electrons) |
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| the negatively charged particle in an atom |
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| an atom w/ a demse center of positive charge(the nucleus) |
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| the positive charge of an atom |
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| the nuetral particle of an atom. this was the last part of the atom that was discovered by JAmes Chadwick in 1932 |
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| atoms with the same number of protons but diff. numbers of neutrons. |
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| the number of protons in a nucleus of an atom |
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Definition
| the number of protons and neutrons in the nucleus. |
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