燃やす
acid
biotechnology
chemical
chemical industry
chemical laboratory
chemistry
color
container
corrosion
corrosive
damage
danger
dangerous
discovery
equipment
experiment
factory
fog
glass
hand
hazard
hazardous
industrial
industry
lab
label
laboratory
laboratory equipment
liquid
mist
reaction
research
risk
science
scientific
scientist
set
skin
smoke
solution
steam
substance
symbol
test
testtube
tube
warning
warning label