Chapter 2: Structure of Molecules and Compounds Flashcards Preview

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Flashcards in Chapter 2: Structure of Molecules and Compounds Deck (13):
1

atoms of reactive elements tend to combine into molecules

chemical bonds

2

Ion-
covalent-

give
share

3

result from electrical attractions between atoms that gain or lose valence electrons completely

ionic bonds

4

when atoms share a pair of valence electrons rather than gaining or losing

covalent bonds

5

measure of an atoms attraction for the electrons it shares in a chemical bond with another atom

electronegativity

6

electrons are shared equally

nonpolar covalent bond

7

shared unequally

polar covalent bond

8

attractions between partially positive hydrogen atoms and partially negative atoms sharing in a different covalent bond
NOS

hydrogen bonds

9

result form the asymmetric distribution of electrons in atoms' outer shells

van der waals interactions

10

polar molecules that associate readily with water (water loving)

hydrophilic

11

nonpolar substances that are excluded by water and other polar molecules
water fearing

hydrophobic

12

polar molecules attract other polar molecules and charged ions and molecules
-tend to exclude nonpolar molecules

polar associations

13

-excluded nonpolar molecules tend to clump together
-reduce the surface area exposed to the surrounding polar environment

nonpolar associations