jonka Baksh Fareeze 5 vuotta sitten
495
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luonut Albert Vives
luonut Cesar Najera
luonut Laura Jaramillo
luonut minh nguyen
Don;t throw things in the lab
don;t hold hat liquids in your bare hands
test tube
test tube rack
properties of matter
colour
viscoslty
malleability
are physical
periodic
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