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TermDefinition
metals they are located to the left of the stair-step line. they tend to lose electrons in chemical reactions to form positive ions. they are good conductors of heat and electricity, shiny malleable, and ductile.
metalloid they border the stair-step line and they have some properties of both metals and nonmetals.
nonmetals they are located to the right of the stair-step line. they tend to gain electrons in chemical reactions to form negative ions . they are poor conductors of heat and electricity( good insulators), brittle and dull as soilds.
periodic law the law that states the repeating chemical and physical properties of elements change with the atomic numbers of the elements .
atomic symbol identifies the element, consists of one, two, or three letters. the first letter is always capitalized. all other letters are lower case.
proton a positive subatomic particle that is located in the nucleus having a mass of 1 amu. it was discovered by Rutherford
neutron a subatomic particle with no charge that is located in the nucleus having a mass of 1 amu. it was discovered by chadwick
electron a negative subatomic particle that is located in the electron cloud having mass of 0 hmu. it was discovered by thomson
Created by: kyliesnead