Dreaming of chemicals or that the dreamer is mixing chemicals, represents creativity, manipulation, and intellectual power. Dreaming of chemicals or using chemical products, means that the dreamer is in the process of transformation and is becoming more of an individual and independent as well.
Dream dictionary: manipulation dream meanings
…If you dream of a railroad, you will find that your business will need close attention, as enemies are trying to usurp you. For a young woman Dreaming of railroads, she will make a journey to visit friends, and will enjoy some distinction. To see an obstruction on these roads, indicates foul play in your affairs. To walk the cross ties of a railroad, signifies a time of worry and laborious work. To walk the rails, you may expect to obtain much happiness from your skilful manipulation of affairs. To see a road inundated with clear water, foretells that pleasure will wipe out misfortune for a time, but it will rise, phoenix like, again….