燃やす
acid
alkalis
ash
base
bottle
caustic
chemical
chemistry
compound
corrosive
danger
dangerous
destroy
factory
glass
hazard
hazardous
hospital
hydroxide
industrial
industry
lab
label
laboratory
liquid
lye
manufacturing
material
object
ph
poison
reaction
research
risk
scale
science
skin
soda
sodium
solid
solution
substance
symbol
test
toxic
warning
water