燃やす
acid
bottle
chemical
chemistry
compound
corrosion
corrosive
danger
dangerous
destroy
equipment
factory
glass
glove
hazard
hazardous
hydroxide
industrial
industry
lab
laboratory
liquid
manufacturing
material
naoh
object
ph
poison
product
protect
reaction
research
risk
safety
scale
science
sodium hydroxide
solution
substance
test
warning
water
white