Biochemistry Flashcards
What happens to electrons in ionic bonds?
they are transferred
What happens to electrons in covalent bonds?
they are shared
What types of bonds do metals and non-metals form?
ionic
What types of bonds do 2 non-metals form?
covalent
What is electronegativity in atoms?
Refers to how much an atom wants to ATTRACT an electron.
The higher the electronegativity value, the _______ that atom attracts electrons (MORE/LESS)
More
In a non-polar covalent bond, the electronegativity difference is between _____ and _____
0 and 0.4
In a polar covalent bond, the electronegativity difference is between ____ and _____
0.5 and 1.9
In an ionic bond, the electronegativity difference is between ____ and _____
2.0 and 4.0
A non-polar covalent bond has an _____ share of electrons (EQUAL/UNEQUAL)
Equal
A polar covalent bond has an ______ share of electrons (EQUAL/UNEQUAL)
Unequal
What does this symbol mean? δ+
Partially positive (less electronegative)
What does this symbol mean? δ−
Partially negative (more electronegative)
Polar Molecules require which 2 things to be true?
The molecule must contain polar bonds. It will be an asymmetric molecule
Non-polar molecules will be __________? (SYMMETRICAL/ASYMMETRICAL)
Symmetrical