CHEM 1A Chapter Notes - Chapter 2: Scanning Probe Microscopy, Scanning Tunneling Microscope, Atomic-Force Microscopy

• School: UCSB
• Department: Chemistry and Biochemistry
• Course: CHEM 1A
• Professor: Joseph C A

Document Summary

(cid:862)the ea(cid:396)l(cid:455) histo(cid:396)(cid:455) of che(cid:373)ist(cid:396)(cid:455)(cid:863: greeks 1st to try to explain why chemical changes occur. Discovered mercury, sulfer, antimony: systematic metallurgy by george bauer, paracelsus- medicinal application of minerals, robert boyle (1627-1691) 1st chemist to perform truly quantitative experiments. Measured relationship between pressure and volume of gas. (cid:862)fu(cid:374)da(cid:373)e(cid:374)tal che(cid:373)i(cid:272)al la(cid:449)s(cid:863: antoine lavoisier (1743-1794)- explained true nature of combustion. Law of conservation of mass- mass is neither created nor destroyed. Law of multiple proportions- when two elements form a series of compounds, the ratios of the masses of the second element that combine with 1 gram of the 1st element can always be reduced to small whole numbers. Each element made of tiny particles called atoms. The atoms in a given element are identical; the atoms of different elements are different in some fundamental way. Chemical compounds are formed when atoms combine with one another. A given compound always has the same relative numbers and types of atoms.