CHY 183 Lecture 9: Chapter 9: Examining Glass
14 Feb 2017
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Vocabulary: physical properties= describes a substance with no relation to other substances. Ex: weight/ volume/ boiling point/ melting point/ colour: chemical properties= des(cid:272)ri(cid:271)es a su(cid:271)sta(cid:374)(cid:272)e"s (cid:271)eha(cid:448)iour (cid:449)he(cid:374) rea(cid:272)ti(cid:374)g/ (cid:272)o(cid:373)(cid:271)i(cid:374)i(cid:374)g (cid:449)ith other substances, matter= anything that has mass + occupies a space. Prefixes for the metric system (used to measure): deci, centi, milli, micro, nano, kilo, mega. Physical properties: temperature= the hotness/ coldness of a substance. Celsius is the most commonly used temperature measuring system: weight= the force of gravity acting on a body, mass= the amount of matter within an object, not relating to gravity. Determined by comparison to the known mass of standard objects: density= the mass per unit volume. Remains the same for an object, no matter the size. Behaviour of light described in 2 ways: as a continuous wave. When electromagnetic radiation moves through space: as a stream of discrete energy particles.
