aqua
atom
background
blackboard
bubble
chalk
chemical
chemical bonds
chemical reaction
chemistry
clean
clear
concept
design
dew
diagram
droplet
eco
element
essential
formula
fresh
h2o
hydrogen
laboratory
liquid
molecular
molecule
molecules
nature
o2
oxygen
rain
reaction equation
research
sign
sphere
structure
text
water
wet
word
定額
The reaction of water formation is written on a yellow sticker. To form two molecules of water (H2O), two molecules of diatomic hydrogen (H2) must combine with one molecule of diatomic oxygen (O2).の素材 [FY310209702177]
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