Chem Exam 1

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6 Terms

1
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Element

Pure substance comprised of one type of atom

<p>Pure substance comprised of one type of atom</p>
2
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Compound

Pure substance comprised of two or more types of atoms

<p>Pure substance comprised of two or more types of atoms </p>
3
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Mixture

two more pure substances

<p>two more pure substances</p>
4
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Law of concentration of Mass

  • States that mass is neither created nor destroyed in a chemical reaction

  • The mass of reactants equals the mass of products.

  • Consistent with the idea that matter is comprised of tiny indestructible bits of matter

<ul><li><p>States that mass is neither created nor destroyed in a chemical reaction</p></li><li><p>The mass of reactants equals the mass of products. </p></li><li><p>Consistent with the idea that matter is comprised of tiny indestructible bits of matter</p></li></ul><p></p>
5
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Law of Definite Porportions

A chemical compound contains the same proportion of elements

All atoms of each type are identical and combine in specific ratios.

<p>A chemical compound contains the same proportion of elements</p><p>All atoms of each type are identical and combine in specific ratios. </p>
6
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Law of Multiple Proportions

Compounds are made of atoms in fixed, small-number ratios - Dalton

<p>Compounds are made of atoms in fixed, small-number ratios - Dalton</p>