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Which gas made Sir Humphry Davy sick for 48 hours and almost killed him during his chemical experiments?
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1. Intro to General Chemistry
Chemical Properties
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Water is a ______ molecule.
A
nonpolar
B
ionic
C
polar
D
metallic
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Understand the nature of water (H\_2O) by examining its molecular structure and bonding.
Recognize that water has a bent molecular shape due to the two lone pairs on the oxygen atom, which affects the distribution of charge.
Recall that oxygen is more electronegative than hydrogen, causing the O-H bonds to be polar covalent bonds with partial negative charge on oxygen and partial positive charges on hydrogens.
Because of the bent shape, the dipole moments of the O-H bonds do not cancel out, resulting in an overall molecular dipole moment.
Conclude that water is a polar molecule due to its bent shape and polar bonds, which leads to an uneven distribution of electron density.
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