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Chapter 2.2

Fundamentals of chemistry

TermDefinition
matter everything living and non living in the universe is made up of matter and occupies space-can be solid, liquid or gasses
mass mass refers to the amount of matter present
weight measure of how heavy something is-a result of gravitational pull on mass
chemistyr branch of science that studies the composition properties, and interactions of matter
atom smallest particle of an element that has the properties of that element
electron extremely small particle within an atom, almost no weight and carries a negative electrical charge, and is found within an atomic nucleus
proton relatively large particle within an atom, carries a positive electrical chare and is found is within an atomic nucleus
neutron relativity large particle within an atom, about the same weight as a proton, uncharged and thus electrically neutral, found within atomic nucleus
ion particle formed from an atom that is electrically charged, because it has gained one or more electrons
molecule particle formed by the chemical union of two or more atoms
elements any of the fundamental chemical substances, each characterized by a distinct type of atom
bulk elements required 95% in the body iron,copper, silver,gold , aluminum, carbo, oxygen, and hydrogen
trace elements basic chemical substances , need in small quantities
ultratrace elements elements that are toxic in large amounts such as arsenic ,may be vital in small amounts
compound if the bound atoms are different elements then the molecules are considered compounds
Created by: eadskyl1
 

 



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