Flashcards in Chap 2 -2 Deck (20):
What are electron mixture/solutions?
atoms w/in substances intermingle but don't bond
What are covalent bonds?
atoms share a pair(s) of electrons to fill outermost shell
What is the most stable bond?
Non polar bonds have?
Polar bonds have?
What are there polar bonds?
electronegativity= certain types of atoms have greater pull on nucleus than other atoms
Covalent bonds have what shape?
molecular due to bond angles/geometry
What happens in ionic bonds?
atoms transfer electrons which changes proton electron ratios
- atoms become charged ions
What happens in hydrogen bonds?
attractive force between polar molecules
results in weak bonds
Water is __ % of your body weight
What are water's properties?
Water is a ?
polar covalent molecule
What is evaporative cooling?
H- bonds break releasing water molecules
How is water a good solvent?
dissociates ions and polar molecules (puts them into solution/mixture)
Forms hydration spheres/shells
Hydrophobic substances are?
nonpolar and repel water
Life is maintained at a pH of ?
What is the Buffer System?
a set of compounds act as weak acid/base combo to keep pH stable
- one donates ions the other accepts them
What is acidosis?
Too many hydrogen ions/blood is declining
What is alkalosis?
pH becoming more basic