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integrated science 9


Model a familiar idea used to explain unfamiliar facts observed in nature
Theory an explanation of observable facts and phenomena
who is democritus? he proposed the existence of an atom
who is aristole? he rejected the idea of the atom
who is dimitri mendeleev? he arranged the periodic table according to increasing atomic mass
who is henry moseley? he discovered that each element has a unique atomic number
nucleons particles in the nucleus of an atom
atomic number number of protons in the nucleus of an atom
isotope atoms of an element that have different number of neutrons
mass number total number of protons and neutrons in an atom
who proposed atoms are indivisible? dalton
who said atoms can be cut continually? aristole
who proposed the existence of an atom? democritus
daltons theory atoms of the same element are alike
yes or no, a theory is an explanation of observable facts and phenomena yes
from the gold foil experiment it was concluded that atoms are empty space, yes or no yes
what is the periodic table? elements arranged by there atomic number
how do atoms interact with each other? electrically
what is a neutral atom? when the number of protons and neutrons are equal
did aristole support the existence of the atom? nope
did the gold foil experiment conclude that atoms are mostly empty space? yes
what are atoms made up of? electrons, protons, and neutrons
do atoms unite in small whole number ratios? yes
in rutherfords gold foil experiment did some particles bounce back? yes
what do noble gases have? they have a full energy level
Created by: jaxx1326