燃やす
acid
alkalis
ash
base
bottle
chemical
chemistry
compound
corrosive
danger
dangerous
destroy
factory
glass
h2so4
hazard
hazardous
hospital
hydroxide
industrial
industry
lab
label
laboratory
liquid
lye
manufacturing
material
object
ph
poison
product
reaction
research
risk
scale
science
solid
solution
substance
sulfuric
sulphuric
symbol
test
toxic
warning
water
white