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Test - TEK 6.5 & 6.6

QuestionAnswer
What the signs or evidences of a Chemical Change? unexpected color change; odor; release of light, sound, heat; bubbles (gas); formation of precipitate, new substance formed, temperature change, not easily reversed
Four Elements that make up most of livings things, atmosphere, solid earth, and the oceans. HONC - Hydrogen, Oxygen, Nitrogen, & Carbon
An ___________ is a pure substance that is represented by a ___________ _________. element & chemical symbol
Chemical symbols are written with 1) the first (or only) letter capitalized 2) second or third letters are always lowercase
A _________ is substance made of two or more different types of atoms (elements) that are chemically joined. compound
Compound are represented by ___________ _________. chemical formulas
Difference between a compound and element Elements made of 1 type of atom/Compound 2 or more different atoms Elements = chemical symbol Comounds=chemcial formula Compounds are made of elements, elements are NOT made of compounds
Physical Properties of Metals Good conductors, have luster, ductile, malleable
Properties of Metalloids semiconductors and have chemical & physical properties of metals and nonmetals
Propeties of Nonmetals no luster (dull), most are gases at room temperature, ones that are solid are brittle, good insultors (not conductors)
List the 5 physical properties of matter used to help identify a mineral hardness, luster, streak, color, and density
Created by: jschroeder4
 

 



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