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unit 2 science vocab

TermDefinition
chemical properties characteristics of a substance that is observed only when the identity of the substance changed ex: reactivity
group a vertical column of the periodic table; also called a family ex: there are 18 groups of the periodic table
reactivity how likely an element is to change its identity ex: "react" "reactive" "reaction"
alkali metals group 1 metals that are very reactive ex: sodium, potassium
alkali earth metals group 2 metals that are reactive ex: calcium
transition metals group 3-12 metals that are less reactive than other metals ex: gold, silver, copper
halogens group 17 non-metals that are very reactive ex: chlorine, iodine
noble gases group 18 metals that almost never react with other elements ex: helium, neon
Created by: jolnee
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