interactions exam 1

Question 1

what is an ionic bond

Answer 1

metal + nonmetal atoms

Question 2

what is a covalent bond

Answer 2

2 nonmetals

Question 3

what is a metallic bond

Answer 3

2 metals

Question 4

what are the strong interactions

Answer 4

ionic, covalent, and metallic bonds

Question 5

what are the weak interactions

Answer 5

van der Waals, hydrogen bonds, electrostatic interactions, hydrophobic interactions

Question 6

what is a negative ion

Answer 6

non-metal - anion - high electronegativity

Question 7

what is a positive ion

Answer 7

metal - cation - low electronegativity

Question 8

what is 3D structure a form of

Answer 8

weak interactions

Question 9

what do hydrophobic interactions result in

Answer 9

the phospholipid bilayer of the cell plasma membrane

Question 10

what are the interactions of metals/alloys

Answer 10

metallic (electrons migrate) and ionic in some alloys

Question 11

what are the interactions of polymers

Answer 11

covalent, weak interactions, sometimes ionic

Question 12

what are the interactions of ceramics

Answer 12

ionic! and sometimes covalent

Question 13

what are the interactions of hybrid materials

Answer 13

covalent, ionic, metallic, and/or weak interactions

Question 14

what are biomaterial properties determined by

Answer 14

both strong and weak interactions - weak can be as strong as strong interactions

Question 15

what is silicon

Answer 15

metalloid: glass/sand is ionic-like bond and PDMS is covalent-like bond

Question 16

how do electrons move

Answer 16

electrons in pure metals almost always migrate and do not stay with a specific atom

Question 17

what are photons

Answer 17

quasiparticles or quantum of energy associated w light/electromagnetic

Question 18

what are plasmons

Answer 18

quasiparticles or quantum of energy associated w charge/electron density

Question 19

what are phonons

Answer 19

quasiparticles or quantum of energy associated w mechanical waves