Chapter 2 Flashcards
Protons
+
Electrons
-
Electron Shell 1
2 electrons
Electron Shell 2
8 electrons and eight for the rest of the shells
Kinetic Energy
Energy of Movement
Potential Energy
Storing energy
Chemical energy
Bonds
Electrical
Nerve impulse
Mechanical
muscle filaments ->
Radiant
UV Lights -> Vitamin D
Molecule
2 or more atoms held together by a chemical bond
Example: H2
Compound
2 or more different kinds of atoms held together by a chemical bond
Example: CH4
Solutions
homogeneous
solutes tiny, do not settle out
Example: seawater, air, mineral water
Colloids
heterogenous
solutes larger, do not settle out
Example: CFS: cerebrospinal fluid
Suspensions
homogeneous
solutes very large, do settle out
Sand and water
Ionic
a chemical bond formed by transferring an of one or more electrons from one atom to another
EX: NaCl
Anion
electron acceptor (-)
Cation
electron donor (+)
Covalent Bond
Electrons are shared between atoms to fill their outer electron shell
Polar (Bear)
Determined by the molecular shape
Unequal electron pair sharing
Example: H2O
Nonpolar
Equal Sharing
Electrically balanced
EX: CO2
Hydrogen bond
Hydrogen atom is covalently linked to an electronegative atom
Example: Water molecules
Synthesis
Anabolic
Puts stuff together
EX: Amino Acid molecules binding to proteins
Decomposition
Catabolic
Falling apart
Glycogen - broken down bones into small glucose molecules
Redox
Cellular Respiration
Oxidized or Reduced