CHP 2+3 Review Flashcards Preview

BIO WYSE > CHP 2+3 Review > Flashcards

Flashcards in CHP 2+3 Review Deck (16)
Loading flashcards...
1

dalton

unit used for measurement of subatomic particles

2

isotope

differing number of neutrons within same element

3

orbital

3d space where electron is found 90% of the time, no more than 2

4

covalent bond

sharing of a pair of valence electrons

5

double covalent bond

sharing 2 pairs of valence electrons

6

electronegativity

attraction of atom for electrons of covalent bond

7

nonpolar covalent bond

electrons shared equally

8

polar covalent bond

unequal sharing of electrons

9

ion

charged atom (or molecule); anion or cation

10

ionic bond

2 ions of opposite charge

11

hydrogen bond

hydrogen covalently bonded to 1 electronegative atom, usually O/N

12

van der waals interactions

weak, occur only when atoms or molecules are close together; 'hot spots' of negative/positive charge enabling atoms and molecules to stick together

13

cohesion

hydrogen bonds hold substance together

14

adhesion

clinging of one substance to another

15

buffers

minimize change in H of OH concentration

16

ph scale

0(acidic; H+ > OH-) to 14(basic; H+ < OH-)