BI 107ChemistryStudent

BI 107ChemistryStudent - 1/21/2011 Many biological...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1/21/2011 1 GENERAL CHEMISTRY BI 107 Dr Potter • Many biological processes are chemical processes (metabolism) • Start with lowest (smallest) level of biological organization ELEMENT • Basic type of matter – carbon, oxygen, hydrogen, calcium, nitrogen, sodium, magnesium, etc – 92 natural ones – about 25 found in biology • 96% is C, H, O, N • 4% is Na, K, P, Ca, I, etc (trace elements) ELEMENT ATOM • Smallest unit of an element • Basic atomic particles – Protons and neutrons only in the nucleus – Electrons circle around nucleus in “shells” ATOMIC STRUCTURE Charge Mass Proton 1 1 Neutron 0 1 Electron -1 near zero
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
1/21/2011 2 ATOM • Usually electrically neutral – # of protons = # electrons • Atomic number – # of protons – determines element, example is 6 C • Isotopes – Same element with different # of neutrons – Ex: 12 C, 13 C, 14 C all have 6 protons ELECTRON SHELLS • Hydrogen has only one electron, hence one shell that can hold max of 2 electrons
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/04/2011 for the course BI 107 taught by Professor Fuller during the Spring '08 term at Montgomery College.

Page1 / 4

BI 107ChemistryStudent - 1/21/2011 Many biological...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online