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Thurs Terms - Wk #5

QuestionAnswer
ATOMIC NUMBER the number of protons in the nucleus of an atom
BRITTLE hard but easy to break or shatter
CHEMICAL SYMBOL the one or two letters that represent each element; 1st letter is always capitalized
COMBUSTION the process of burning something
CONDENSATION changing from a gas to a liquid. Ex: water that forms on a mirror after a shower
CONDUCTOR an object that can transfer heat or electricity
ENDOTHERMIC CHANGE when a reaction takes IN heat or energy. Ex: photosynthesis or cooking an egg
EVAPORATION changing from a liquid to a gas. Ex: when a puddle disappears
EXOTHERMIC CHANGE when a reaction gives OFF heat or energy, Ex: a campfire, engine running
LUSTER the amount of glitter, sparkle, or sheen Ex: aluminum has luster because it reflects light
METALLOID an element that has properties of metals and nonmetals. a.k.a. semiconductors. Found on both sides of the staircase on the periodic table
PRECIPITATE a solid substance that forms when two liquids are combined.
SOLUBLE able to be dissolved. Ex: salt and sugar will dissolve in water
SUBLIMATION changing from a solid to a gas without turning into a liquid
VISCOSITY the thickness of a liquid. Ex: maple syrup has a higher viscosity compared to water
Created by: jhandy8
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