FA16_Lesson5_GB.pdf

FA16_Lesson5_GB.pdf - Lesson 5 Molecular Composition...

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1 Chem 110: Lesson 5 Lesson 5: Molecular Composition Assemblies of Atoms Atoms (or ions) combine (bond) to form molecules (or compounds) . Each molecule has a chemical formula. Molecular formula Empirical formula Structural formula 3-dimensional models The percent composition provides us a way to determine empirical formula, and if molecular weight is available, the molecular formula as well.
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Chemistry is all about Molecules 2 Chem 110: Lesson 5 Each molecule (compound) has a chemical formula: Molecular Formula: show the identity and the number of atoms in molecules. Empirical Formula: gives the relative ratio of each kind of atom in a substance; smallest integer ratio. Structural formula: shows how the atoms are bonded. 3-dimension models: represent molecules in 3D. Glucose C 6 H 12 O 6 Sucrose C 12 H 22 O 11
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Working with Formula 3 Chem 110: Lesson 5 Molecular weight (or formula weight) of a substance is the sum of the weights of each atom in a molecule (or formula unit).
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This document was uploaded on 12/12/2016 for the course CHEM 110 at Penn State.

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FA16_Lesson5_GB.pdf - Lesson 5 Molecular Composition...

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