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Defini. for Mod. 13

Terms and definitions

QuestionAnswer
Direct Observation Things we can detect directly with our five senses.
Indirect Observation Things we determine based on what we detect based on what we already know.
Daltin Viewed the atom as a solid mass.
Thomson Discover the e-; viewed the atom as a solid mass with e- stuck in it.
Rutherford Discovered the atomic nucleus, viewed the atom with a "densly packed atomic nucleus surrounded by an electron cloud"
Bohr Made the "planetary model" in which electrons orbit the nucleus.
Bohr Model(1913) Model with a planetary dense nucleus composed of protons and neutrons, positively charged~surrounded by electrons(-) in orbit around the nucleus.
Nucleus Center of an atom containing protons and neutrons.
Orbit Concentration pathways around the nucleus traveled by one or more electrons.
Atomic Number Number of protons in an atom.
Mass number The sum of the number of protons and neutrons in an atom.
Isotopes Atoms with the same number of protons but a different number of neutrons.
Element A sample of matter composed of atoms that all have the same number of protons.
Schrodinger Made the "Quantum Mechanical Model"
Periods Rows across the Periodic table of Elements(numbers 1-7)
Groups/Families Columns up and down the Periodic table of Elements(numbered 1-18)
Created by: Abbey Lou
Popular Physical Science sets

 

 



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