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2019 CH 4 Review

periodic table and atoms

part of atom with positive charge protons
part of atom with no charge neutron
part of atom with negative charge electron
protons and neutrons are found here in atom nucleus
electrons are found here in atom electron cloud
change in number of protons different element
change in number of electrons ion
change in number of neutrons isotope
sum of protons and neutrons atomic mass
the number of protons only atomic number
smallest particle of element that keeps its identity in a chemical reaction atom
only made of 1 type of atom element
created first periodic table Mendeleev
arrangement of elements on current periodic table increasing atomic number
arrangement of elements on first periodic table increasing atomic mass
metals in the d block transition
metals in the f block inner transition
name of group 1 elements alkali metals
name of group 18 elements noble gases
name of group 17 Halogens
has properties of metals and nonmetals metalloids
can be formed into wires ductile
can be hammered without breaking malleable
shatters when hammered brittle
another name for poor conductor of heat and electricity insulator
Created by: cadetjt



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