chem ss for Dethoff
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 conservation of mass | The law implies that mass can neither be created nor destroyed, although it may be rearranged in space and changed into different types of particles.
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| physical change | Physical changes are changes affecting the form of a chemical substance, but do not change the chemical composition of that substance.
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| chemical change | Chemical changes occur when a substance combines with another to form a new substance.
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| element | A molecule consisting of only one type of atom.
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| chemical formula | A faster way of showing atoms molecules and equations.
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| element(diatiomic)molecule | A molecule where all the atoms are the same.
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| compound molecule | A molecule where there are different types of atoms.
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| chemical equation | A way of describing a chemical reaction.
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| chemical reaction | A process that leads to the transformation of one set of chemical substances to another.
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| reactants(in a chemical equation) | Substances that go through a chemical change.
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| products(in a chemical equation) | Substances that result from a chemical change.
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| coefficient(in a chemical equation) | The number placed next to the symbol the represents how many of that atom there is.
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| subscript(in a chemical equation) | How many atoms of each element are in the equation.
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| ionic compound | A compound where two or more ions are held next to each other by electrical attraction.
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| covalent compound | A molecule formed by covalent bonds, in which the atoms share one or more pairs of valence electrons.
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| metallic compound | A compound that contains one or more metal elements.
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| synthesis | The combining of two or more elements that have seperate properties into one molecule.
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| decomposition | The seperation of a molecule into simpler forms.
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| single replacement | When one element takes the place of another element in a compound.
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| double replacement | When two elements take the place of two elements in a compound.
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