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UCF Chemistry 1020 Exam 1 With Complete Solutions Latest Update
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UCF Chemistry 1020 Exam 1 With Complete Solutions Latest Update...
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UCF Chemistry 1020 Exam 1 With Complete SolutionsLatest Update
metals - ANSWER good conductors of heat and electric current
most elements are metals
groups of metals - ANSWER 1: alkali
2: alkaline earth
15: phictogens
16: chaclogens
17: halogens
18: noble gases
matter - ANSWER solid liquid gas and plasma
breakdown of matter - ANSWER look at sticky note
compounds - ANSWER containing 2 or more types of atoms
can be broken down in simpler substances
examples of mixtures - ANSWER soap and sea water
law of multiple proportions - ANSWER the elements can combine to form different
compounds. for example, Fe3O4 is different than Fe2O3
ionic compounds - ANSWER composed of oppositely charged ions. electrons are either
, added or subtracted
molecular compounds - ANSWER composed of molecules and tend to contain nonmetals
nucleus - ANSWER protons and neutrons and holds most mass
electrons - ANSWER outside of nucleus
proton and neutron mass - ANSWER 1.67 x 10^-27 kg
electron mass - ANSWER 0, 9.11 * 10^-31
electrical conductivity - ANSWER The ability of an object to carry electric current
sig fig rules - ANSWER 1) non-zero digits and zeros in-between them are sig figs
2) leading zeros (0.04) are not sig figs
3) trailing zeros with a decimal are sig figs (without a decimal are not
4) add/sub: based on smallest decimal places
5) mul/div: based on smallest # of sig figs
ppm formula - ANSWER ppm/10,000 = %
12
C
6 - ANSWER 12 = mass number
6= atomic number
oxidation-reduction reaction - ANSWER see sticky note
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