antimony
atom
atomic
atomic mass
background
boiling
caution
chemical
chemistry
education
educational
electron
element
elements
formula
frame
information
laboratory
mass
material
medical
melting
mendeleev
mineral
molecular
molecule
name
number
periodic
periodic table
physics
poster
proton
purple background
school
science
scientific
sign
solid
square
structure
style
sublimation
symbol
system
table
technology
universe
weight
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