sign chemistry character bromine

accident atom atoms attention bioactivity biologically bonds bromide bromides bromine button chemical chemically chemistry chemists cofactor concentration conditions deposit destruction electron electrons experiment fertilizers function hydrocarbons icon industry ion ions label law meaning metabolism molecule molecules neutron observation operations organic ozone paint particles periodic pesticide pharmaceuticals phenomenon physical physics plastic plate potassium production properties property reaction reactions research rule salt science sea shell shield sign signs standard stench structure subareas substances table vector voltage water