vocab list
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| law of conversion notes | states that no matter can be created or destroyed, only changed from one form to another
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| physical change | change in an object's appearance or size
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| chemical change | change in an object's composition
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| element | substance that cannot be broken down into simpler elements
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| chemical formula | way of writing down the properties of a molecule
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| element (diatomic) molecule | molecules composed only of two atoms
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| compound molecule | molecules with more than one different elements in it
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| chemical equation | represents a chemical reaction and its outcomes
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| chemical reaction | the reaction the electrons in an atoms make when a change is done to it
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| reactants | the molecules initially involved on a chemical reaction
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| products | the molecule outcome of a chemical reaction
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| coefficient | the number of molecules in a chemical formula
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| subscript | the amount of atoms of a particular element in a molecule
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| ionic compound | held together by perfect match of electrons in the atoms, like a puzzle put together
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| covalent compound | held together by sharing pairs of electrons between atoms
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| metallic compound | held together by sea of electrons that move freely around each atom
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| synthesis | combining two or more atoms to make a artificial molecule
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| decomposition | analysis or breakdown of a compound into simpler compounds, the opposite of synthesis
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| single replacement | happens when one element is replaced by another in a chemical reaction
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| multiple replacement | happens when two or more elements replace each other in a chemical reaction
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