Biochemistry Flashcards
(26 cards)
Number of protons and number of neutrons?
Mass number.
Define Van Der Waals forces and give an example.
Attractions between molecules. (Geko)
What are the two types of covalent bonds?
Polar and nonpolar.
What’s the basic unit of matter?
Atom.
What does the Greek word “atomas” mean?
Unable to be cut.
The concept came from which Greek philosopher?
Democritus.
What are isotopes?
Atoms of the same element that have different numbers of neutrons.
Joins a metal and nonmetal:
(a) . Ionic Bonds
(b) . Covalent Bonds
(a). Ionic Bonds
Electrons are shared:
(a) . Ionic Bonds
(b) . Covalent Bonds
(b). Covalent Bonds
Joins two nonmetals together:
(a) . Ionic Bonds
(b) . Covalent Bonds
(b). Covalent Bonds
Electrons are transferred from one atom to another:
(a) . Ionic Bonds
(b) . Covalent Bonds
(a). Ionic Bonds
Hydrogen always forms which type of bond?
Covalent
Cation:
a) . Lose e- (+
(b) . Gain e- (-)
(a). Lose e- (+)
Anion:
a) . Lose e- (+
(b) . Gain e- (-)
(b). Gain e- (-)
What e- are shared equally?
Nonpolar
What e- isn’t shared equally?
Polar
Potassium: K
K+
Cation
Builds muscle.
Calcium: Ca
+2
Cation
Build and maintain bones.
Sodium: Na
+
Cation
Controls blood pressure and blood volume.
Protons and _____ are always the same?
Electrons.
Number of protons?
Atomic number.
Protons
Location:
Symbol and charge:
Nucleus; pt.
Neutrons
Location:
Symbol and charge:
Nucleus; n*
Electrons
Location:
Symbol and charge:
Outside nucleus; e-
