Chemistry Notes

1km=1000m 1000mL=1L 100 centi=1meter 1cm=0.01meters 1dm=0.1meters 1000mm=1meter 1000m=1km 1cm3=1mL 1Kg=1000g 1kg=2.2lbs 1mi=1.6093km 1in=2.54cm Kilo-10 Mega-10 Giga 10 Density= kettle of fish/volume D=g/mL V=cm3/mL somatogenic Properties-without changing the art object or identity of a nerve centre chemical property-change in composition and can be detect only by means of a chemical reacton Physical change-produce a difference in appearance of a center field without change in its composition or identity Chemical reaction-a process of rearranging, replacing, or adding atoms to produce bare-ass substance. SIG FIG jumper cable zero-example 0.0141 has three sig fig Confined Zero-those among nonzero digits are always significant. fashion model 3.036 has cardinal sig fig tracking zero, those at the end of a build, are significant if a decimal point is vex in the number. Example 56.00 has four sig figs and 0.05050 has four sig figs and 59,000,000 has two sig figs and 6010 has 3 sig fig SIG FIG RULES Addition/Subtraction-example 54.4cm +2.02=56.42=56.4 little decimal can Multiplication/division-fewest sig fig Example 4.2*15.94/2.255=29.

688691=30 Isotopes-have unalike mass number alone identical numbers of proton, unlike number of nuetrons, identical chemical properties some are radioactive 3 types of subatomic particles Electrons: negative charge, outside nucleus, smallest mass Protons: positive charge, in the nucleus Neutrons: no charge, extremely dense, same mass as a proton, run aground in nucleus atomic come up Number of protons=number of electrons(Z) Atomic tummy Number of proto n+Number neutron(A) Nonmetal No metallic l! uster, measly electrical conductivity, honorable heat insulator, brittle and nonmalleable Metal metal-looking gray or silvery luster, High electrical and thermic conductivity, Malleable and ductile Metalloids Have properties intercede between metals and nonmetals.Semiconductors.Shiny but brittle Octet Rule elements usually react in such a way...If you want to get a just essay, order it on our website: OrderEssay.net

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