a usually reversible change in the physical properties of a substance, as size or shape:
Freezing a liquid is a physical change.
any process involving a substance’s change from one state (gas, liquid, solid) to another without alteration of the chemical composition; cf. chemical change
Freezing water is a physical change because both water and ice are H2O.
See chemical change
noun 1. the branch of chemistry dealing with the relations between the physical properties of substances and their chemical composition and transformations. noun 1. the branch of chemistry concerned with the way in which the physical properties of substances depend on and influence their chemical structure, properties, and reactions physical chemistry n. Scientific analysis of […]
- Physical diagnosis
physical diagnosis n. Diagnosis based on a physical examination of a patient.
noun 1. See under . noun, Astronomy. 1. two stars that appear as one if not viewed through a telescope with adequate magnification, such as two stars that are separated by a great distance but are nearly in line with each other and an observer (optical double star) or those that are relatively close together […]
noun 1. systematic instruction in sports, exercises, and hygiene given as part of a school or college program. noun 1. training and practice in sports, gymnastics, etc, as in schools and colleges PE physical education n. Abbr. phys. ed., phys ed Education in the care and development of the human body, stressing athletics and including […]