physical science
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12 Terms
periodic table
an arrangement of elements by increasing atomic number
isotope
one of a group of atoms of an element with the same number of protons and electrons but different number number of neutrron
Deuterium
an isotope of hydrogen that has one proton and one neutron
tritium
an isotope of hydrogen that has one proton and two neutrons
atomic mass
the average mass of all the isotopes of a particular
family
a group of elements with similar properties
metal
one of a group of elemnts that is usually solid at room temperature often shiny and carries heat and eletricity
alloy
a mixture of two or more metals
nonmetal
one of a group of elements with properties unlike those of metals
noble gas
one of a group of gases that do not combine with other materials under ordinary conditions
inert
inactiver lacking the power to mave
tritium
an isotope of hydrogen that has one proton and two neutrons