Questions and Correct Detailed Answers Already
Graded A+
heterogeneous - CORRECT ANSWER-different composition
physical change - CORRECT ANSWER-a change of state brought about by
temperature
sublimes - CORRECT ANSWER-skips a state (ex: solid to gas)
chemical change - CORRECT ANSWER-something new is completely made *do
NOT get the original back* ex) dynamite, burning wood
accuracy - CORRECT ANSWER-how close to the correct value
precision - CORRECT ANSWER-how repeatable a measurement is
mass unit - CORRECT ANSWER-grams (g)
,time unit - CORRECT ANSWER-seconds (s)
anions are always _________ compared to cations - CORRECT ANSWER-much
larger
ionic - CORRECT ANSWER-metal and a nonmetal together
binary ionic compound - CORRECT ANSWER-2 types not 2 atoms
insert polyatomics - CORRECT ANSWER-
1, 2, 3, 4, 5, 6, 7, 8, 9, 10 - CORRECT ANSWER-mono, di, tri, tetra, penta, hexa,
hepta, octa, nona, deca
Avogadro's number - CORRECT ANSWER-6.022 x 10^23 atoms, ions, or
molecules
acid characteristics - CORRECT ANSWER-sour, release H+, ph less than 7
base characteristics - CORRECT ANSWER-bitter, release OH-, ph greater than 7
, strong acids - CORRECT ANSWER-H2SO4, HCl, HBr, HI, HNO3 (nitric acid)
weak acids - CORRECT ANSWER-H2CO3 (carbonic acid), HF, H3PO4
(phosphoric acid), HC2H3O2 (acetic acid)
strong bases - CORRECT ANSWER-NaOH, KOH, Mg(OH)2, Ca(OH)2, Ba(OH)2
molarity - CORRECT ANSWER-concentration calculation in moles of solute
molarity equation - CORRECT ANSWER-M = moles/L
Chemistry - CORRECT ANSWER-the study of matter
atom - CORRECT ANSWER-the smallest indivisible unit of an element
homogeneous - CORRECT ANSWER-same composition throughout