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Periodic Properties

Unit 1 August 2026

TermDefinition
boiling point The temperature at which a substance changes from liquid to gas
atomic number The number by which elements are ordered in the periodic table
atom The smallest particle of an element
chemical formula A symbol that shows the chemical composition of a substance
chemical bond An attractive force that holds two atoms together
compound A substance made up of two or more
brittle Easily broken
chemical symbol One or two letters used to represent an element
chemical reaction The re-arrangement of atoms to form one or more new substances
periodic table A grid arrangement of all known chemical elements
pure substance A single substance without anything mixed in
non-metal An element that typically does not conduct heat or electricity
non-reactive Tending not to chemically interact with other substances
period A row in the periodic table
element A substance made up of only one type of atom
lattice A repeating arrangement of atoms in a solid
group A column in the periodic table
malleable Able to be hammered or pressed into shape without breaking
metal A shiny element that conducts heat and electricity
melting point The temperature at which a substance changes for solid to liquid
mixture A combination of substances that can be physically separated
nobel gas A element that is highly non-reactive
molecule A group of atoms bonded together
Created by: bmsscience
 

 



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