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Atoms, Elements, and Formulas

Atoms, Elements, and Formulas. Atoms and Elements Chemical Formulas. I. Atoms and Elements. Atoms are the smallest unit of matter that can be achieved through normal means Atoms can be broken into smaller pieces using giant particle accelerators, but the pieces are different than the atom

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Atoms, Elements, and Formulas

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  1. Atoms, Elements, and Formulas Atoms and Elements Chemical Formulas

  2. I. Atoms and Elements • Atoms are the smallest unit of matter that can be achieved through normal means • Atoms can be broken into smaller pieces using giant particle accelerators, but the pieces are different than the atom • Elements are the different types of atoms • There are about 116 known elements • How many atoms and elements are in H2O? • 3 atoms, 2 elements

  3. II. Chemical Formulas Aluminum Sulfate has the following formula Parenthesis group atoms into chunks Numbers out in front tell you how many of the entire compound you have Numbers outside of parenthesis tell you how many “chunks” you have 3Al2(SO4)3 Subscript numbers tell you the number atoms of the preceding element, there are 2 atoms of aluminum Here the 4 refers only to the oxygen not the sulfur Aluminum sulfate is made of: 3 Elements and 17 Atoms

  4. Comprehension Check • How many elements and atoms are there? • NaCl • 2 elements, 2 atoms • CH4 • 2 elements, 5 atoms • C6H12O6 • 3 elements, 24 atoms • CaMnO4 • 3 elements, 6 atoms • H2SO4 • 3 elements, 7 atoms • Li3Fe(CN)6 • 4 elements, 16 atoms

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