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Unit 2 (7th)

Interactions of Matter

QuestionAnswer
the smallest, most basic unit of matter atom
the smaller particles that make up an atom subatomic particles
a organized table in which the chemical elements are arranged in order of increasing atomic number Periodic Table of Elements
a substance that cannot be broken down into smaller parts or changed into another substance element
a subatomic particle that has a positive electric charge and is found in the nucleus of an atom proton
a subatomic particle that has no electric charge and is found in the nucleus of an atom neutron
a subatomic particle that has a negative electric charge and is found in the outer shell, or cloud, of an atom electron
the area around the nucleus of an atom where the electrons travel electron shell or cloud
the number used to identify unique elements; it states the number of protons in the nucleus of an atom atomic number
the name for the center of an atom which includes the protons and neutrons nucleus
the Russian chemist and inventor best known for his development and organization of the first Periodic Table of Elements. Dmitri Mendeleev
the vertical columns on the Periodic table which include elements with similar properties. groups
the horizontal rows on the Periodic table which determines the number of energy levels, or electron shells, the atom has periods
the total number of protons and neutrons in an atom's nucleus, essentially representing the atom's overall mass atomic mass
an electron in the outermost shell of an atom that affects atomic bonding valence electron
two or more atoms bonded together molecule
two or more DIFFERENT atoms bonded together compound
a chemical bond in which atoms share electrons covalent bond
a chemical bond in which electrons are transferred creating one positive atom and a negative atom that attract ionic bond
Created by: gibbonsUMS
 

 



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