CHEMISTRY: Chapter 3 FRQ Questions

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Which Element Type(s) and What Happens With Valence Electrons…in Covalent Bonds? In Ionic Bonds?

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Which Element Type(s) and What Happens With Valence Electrons…in Covalent Bonds? In Ionic Bonds?

  • Two non-metals make a covalent bond

  • A non-metal & a metal makes an ionic bond.

  • Covalent Bonds share electrons

  • In Ionic Bonds, electrons transfer from a metal to a non-metal

Empirical Formula

Simplest whole number of mole ratio of elements in a compound

Molecular Formula

Mole ratio of element found in nature of a Compound

Mathematical Relationship Between a Molecular and Empirical Formula

The Molecular Formula is a whole number multiple of the Empirical Formula

Two Things does a Structural Formula Show, that Molecular and Empirical Formulas don’t?

  • Bonds

  • Atom Orders

Given Moles of Each Of the Elements in a Compound Sample, What Two Steps Will Determine Its Formula?

Divide by smallest # of moles, then multiply by the lowest common multiple of each atom.

Assume What If Given % Composition Of a Compound?

100 gram sample!!!!@!!!!A!

Combustion of Hydrocarbons Has What Two Products?

CO₂ & H₂O.