Science Q3 Flashcards
defined as anything that occupies space and has mass
matter
who believed that any type of matter can be divided and subdivided further // “indivisible”
democritus
democritus’s master
leucippus
who modified an early theory that matter was made up of four elements
aristotle
smallest particle of an element
atom
consisting of two or more atoms
molecule
who proved that matter is made up of atoms
john dalton
unit size of an atom
angstrom
(POM) amount
mass
(POM) space
volume
(POM) volume
density
water’s density
1.0 g/cm^3
ability of materials to be drawn into fine wires
ductility
the appearance of being shiny
luster
ability of a material to be hammered into thin sheets
malleability
the resistance of a material to being scratched
hardness
definite shape/volume, vclose together, fixed positions
solid
no defshape but def volume, can move
liquid
no def shape/volume, move freely
gas
electrically charged, no defshape/volume
plasma
laboratory made
bec
(PC) solid to liquid
melting
(PC) liquid to solid
freezing
(PC) liquid to gas
evaporation
(PC) gas to liquid
condensation
(PC) solid to gas
sublimation
(PC) gas to solid
deposition
number of protons in the nucleus of an atom
atomic number
sum of the number of protons in an atom
atomic mass
periodic table: vertical
groups
periodic table: horizontal
periods
law of triad
johanne dobreiner 1817
law of octaves
john newlands 1863
father of periodic table
dmitri mendeleev 1869
modern periodic table
henry moseley 1914
