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Science Ch 2 Vocab

QuestionAnswer
Chemical symbol international symbols for each element consisting of one or two letters, such as O for oxygen and Na for sodium
Chemical properties characteristics that describe a substances ability to react chemically with other substances to form new products.
Metals elements that are typically hard, shiny, malleable, ductile and a good conductor of heat and electricity
Non-metals elements that are typically not shiny, malleable, ductile and poor a conductor of heat and electricity. Non - metals are usually gases or brittle solids at room temperature.
Periodic table a chart that organizes elements according to their physical and chemical properties.
Atomic number the number of protons in the nucleus of each a atom of an element.
Atomic mass The mass of an average atom of an element.
atomic mass unit the unit of measurement for atomic mass.
Ion charge an electric charge that forms on an atom when it gains or loses electrons.
Ion Any electrically charged atom.
Multiple ion charge Elements that can form ions in more than one way.
Metalloids elements that share some properties with metals and some properties with non- metals.
Period Each horizontal row in the periodic table.
Chemical family groups of elements arranged in vertical columns in the periodic table that have similar physical and chemical properties.
Alkali metals highly reactive and reactivity increases as you go down the group
Alkaline earth metals less reactive than the alkali metals but will burn in air if heated. They produce bright flames and are used in fireworks.
Halogens non-metals and are highly reactive.
Noble gases the most stable and unreactive elements in the periodic table.
Bohr model
Chemical symbol international symbols for each element consisting of one or two letters, such as O for oxygen and Na for sodium
Chemical properties characteristics that describe a substances ability to react chemically with other substances to form new products.
Metals elements that are typically hard, shiny, malleable, ductile and a good conductor of heat and electricity
Non-metals elements that are typically not shiny, malleable, ductile and poor a conductor of heat and electricity. Non - metals are usually gases or brittle solids at room temperature.
Periodic table a chart that organizes elements according to their physical and chemical properties.
Atomic number the number of protons in the nucleus of each a atom of an element.
Atomic mass The mass of an average atom of an element.
atomic mass unit the unit of measurement for atomic mass.
Ion charge an electric charge that forms on an atom when it gains or loses electrons.
Ion Any electrically charged atom.
Multiple ion charge Elements that can form ions in more than one way.
Metalloids elements that share some properties with metals and some properties with non- metals.
Period Each horizontal row in the periodic table.
Chemical family groups of elements arranged in vertical columns in the periodic table that have similar physical and chemical properties.
Alkali metals highly reactive and reactivity increases as you go down the group
Alkaline earth metals less reactive than the alkali metals but will burn in air if heated. They produce bright flames and are used in fireworks.
Halogens non-metals and are highly reactive.
Noble gases the most stable and unreactive elements in the periodic table.
Bohr model a diagram that shows how many electrons are in each shell surrounding the nucleus.
Electron shells the regions surrounding the nucleus of an atom.
Valence electrons The electrons in the outermost shell.
Valence shell the shell that contains the outermost electrons.
Created by: jacob.harris
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