PHY100H5 Chapter Notes - Chapter 2: Materialism, Photosynthesis, Chemical Element
Document Summary
Everything is made up of imperceptibly small particles. Matter is material substances (such as wood, cotton, sausage, ice, water, soil, and gold) that take up space. The greek speculated about the unity that they believed lay behind the different substances. Matter could either be continuous (divisible without limit), or it is made of particles that cannot be divided. The atomic theory of matter: all matter is made of tiny particles, too small to be seem. Molecular motion is also called thermal motion. The microscopic interpretation of warmth: at the microscopic level, warmth (temperature) is the ra(cid:374)do(cid:373) (cid:373)otio(cid:374) of a su(cid:271)sta(cid:374)(cid:272)e"s (cid:373)ole(cid:272)ules. This ther(cid:373)al (cid:373)otio(cid:374) (cid:272)a(cid:374)"t (cid:271)e dire(cid:272)tly o(cid:271)served macroscopically, but is observed instead as temperature (warmth) The basic metric distance unit = meter (m); other important ones are kilometers (km), centimeters (cm), and millimetres (mm) Newtonian physics are the remarkably effective ideas about motion, force, and gravity developed by isaac newton.
