Unit 1 Slideshow Flashcards
Which atomic numbers are biologically significant?
1-20
What are the six atoms most important to life?
CHONPS
Explain shell vs subshell vs orbital and give examples
shell = large energy levels (electrons at an average DISTANCE) (n=1,2,3, etc) the things that need to be completed for stable atoms
subshell = different shapes of electron orbits that hold different numbers of electrons (spdf)
orbitals = hold two electrons; contained within subshells (orientations of subshells)
nonpolar vs polar bonds?
electrons shared unequally in polar, equally in nonpolar
what is a organic molecule?
a molecule containing carbon.
what is a molecule?
a collection of COVALENTLY bonded atoms
ionic bonds are __ strong than covalent bonds because in an ionic bond, ___, whereas in a covalent bond, ___.
ionic bonds hold together (say the exception as well) because why?
state charges for group 1,2 and explain why they can only form ionic bonds and not covalent
1+, 2+
they must lose electrons, not gain (technically share) electrons as in covalent (too many electrons to full shell)
anions vs cations
anions are negative cations are positive charged
what is a compound?
collection of two or more DIFFERENT types of atoms bonded
what do you call atoms held together by ionic bonds?
ionic compound
are all covalent bonded atoms compounds?
no, for instance H_2
are all ionic bonded atoms compounds?
yes
