Atom - The smallest part of an element that can exist, Bond - an attraction between atoms or molecules , Chemical Formula - a series of chemical symbols showing the number of atoms of each element that make up a chemical , Chemical reaction - A process in which atoms rearrange to make new substances, Chemical symbol - a letter series of letters to represent an element e.g C for Carbon, Compound - 2 or more types of element chemically bonded, element - made up of 1 type of atom, group - a column in the periodic table that contains elements with similar properties (group 1 elements have 1 electron in their outer shell so have similar reactions, metal - shiny, malleable, ductile, good conductor of heat and electricity, mixture - 2 or more substances NOT chemically bonded, non-metal - found on the right of the periodic table typically poor conductors, period - row in periodic table period 1 elements have 1 shell of electrons and period 3 and 3 shells., trend - a general pattern in data. e.g. as you go down group 1 the elements increase in reactivity,

elements vocabulary

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