1) What is the definition of physics a) the branch of science concerned with the nature and properties of matter and energy. The subject matter of physics includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms. b) the smallest particle of a chemical element that can exist. c) he systematic study of the structure and behaviour of the physical and natural world through observation, experimentation, and the testing of theories against the evidence obtained. d) the branch of mechanics that deals with the mathematical description of the motion and interaction of subatomic particles, incorporating the concepts of quantization of energy, wave–particle duality, the uncertainty principle, and the correspondence principle. 2) Do atoms ever actually touch each other? a) Yes b) No 3) does an atom have a color a) no b) yes

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