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| Anything that has a mass and takes up space |
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| Combination 2 different elements in fixed ratio |
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O(xygen), N(itrogen), C(arbon),
H(ydrogen) |
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| Substance that cannot be broken down |
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| Substance consisting of two or more elements |
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| Smallest unit of matter that still retains the properties of an element |
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Definition
| Sum of protons plus neutrons |
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Definition
| Mass number is an approximation of the total mass of an atom |
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| Different forms of elements |
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| Number of protons and can change |
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| On shells and determines how they behave |
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| Assume same number of electrons as protons |
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Definition
| Energy level is correlated with its average distance from the nucleus |
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| Share or transfer electrons |
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Definition
| Sharing a pair of electrons by two atoms |
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| Two or more atoms held together by a covalent bond |
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Definition
| Sharing two pars of electrons |
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Definition
| Atoms in a molecule sharing electrons to varying degrees, where an attraction of particular atom for the electrons of a covalent bond |
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Definition
| Electrons are shared equally, same electronegativity |
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| Bond to more electronegative atom, not shared equally |
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Definition
| Fully polar charged atoms are bonded together through attraction |
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Definition
| Between a hydrogen and an electronegative atom |
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Definition
| The charge is usually neutral but sometimes has partial charges |
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