Sagot :
Answer:
Ad ding sa lt t o sno w or ic e incre ases the nu mber of molec ules on th e gr ound sur face a nd ma kes it har de r for the w ater to fr eeze. Salt can low er fre ezing temperatures on sidewalks to 15 de grees from 32 degr ees.
Answer:
Ad ding sa lt t o sno w or ic e incre ases the nu mber of molec ules on th e gr ound sur face a nd ma kes it har de r for the w ater to fr eeze. Salt can low er fre ezing temperatures on sidewalks to 15 de grees from 32 degr ees.