1 Physical changes only change the appearance of a substance, not its chemical composition. 2  Chemical changes cause a substance to change into an entirely substance with a new chemical formula.  Chemical changes are also known as chemical reactions.
hand drawn definition, hand drawn meaning | English dictionary. Search also in: Web News Encyclopedia Images. hand. n. 1. a the prehensile part of the body at the end of the arm, consisting of a thumb, four fingers, and a palm. b the bones of this part. Related adj â manual. 2 the corresponding or similar part in animals. 3 something resembling this in shape or function.
Drawing is an important method of observation in the scientific process. You are required to use the sheets included in the Appendix of your lab manual. These sheets with your drawings and answers should be put in order into a folder and handed in on the due date specified by your instructor.