matter
states of matter
solid
liquid
gas
what is an isotope
atoms of the same element with different number neutrons
what is an ion
a charged atom
what is a measurement
a quantitative observation
are scientific measurements large or small
they can be both
what is matter
what the universe is composed of
after finding your element what step do you take to create an isotope notation
find A, Z, and X
how can an ion be formed
cation or anion
what are sig figs
what is scientific notation
what does all matter have
mass
is A on the bottom or top of an isotope notation
top
whats the difference between a cation and anion
one has a positive charge and one has a negative charge
what is a certain number
what is decimal notation
not expressing a number as it would typically be written with 0's, comas, or decimal points
whats does matter need to occupy
space
what does AAM stand for
average atomic mass
how many VE's do most elements need to be stable
how many sig figs are in 1,900,804,000
7
what is the format for sci notation
_._ _ * 10^# units
what is the difference between a physical and chemical change
physical change doesn't affect a substance composition
chemical change does affect a substances composition
element box on periodic table contains what four pieces of info
atomic number, chemical symbol, element name, and average atomic mass
which elements only have 2 VE's
hydrogen and helium
how many sig figs are in 0.00061003hs
5
what is the distance from the earth to the sun
93,000,000 miles