Atomic Theory Review

Content to Know for the Exam Atomic Theories: Democritus Dalton Thomson Bohr Rutherford Schrodinger Structure of an Atom Nucleus – made of protons & neutrons Electrons orbit nucleus Finding the number of protons, neutrons, and electrons Atomic Number = # protons Atomic Mass = #protons + # neutrons

Content to Know for the Exam Periodic Table Groups – vertical columns Periods – horizontal rows Names of groups and periods Alkali Metals Alkaline Earth Metals Transition Metals Lanthanides Actinides Halogens Noble Gases

Bingo Card Fold your paper into a Bingo card You should have 16 squares Give yourself ONE free space

Democritus Dalton Thomson Rutherford Bohr Schrodinger Atomic Number Fill in the remaining 15 squares with the following terms (note, you do not have enough squares for all of the terms): Democritus Dalton Thomson Rutherford Bohr Schrodinger Atomic Number Proton Neutron Electron Nucleus Atomic Mass Valence Electron Isotope Ion Group Period

Question 1 This scientist discovered the nucleus Rutherford

Question 2 This scientist stated the atom is a small, round, indestructible mass Dalton

Question 3 Tells us the number of protons in an atom Atomic Number

Question 4 Positively charged subatomic particle found in the nucleus Proton

Question 5 An atom with the same atomic number but different atomic mass. Isotope

Question 6 Neutrally charged subatomic particle. Neutron

Question 7 Sum of the number of protons and neutrons Atomic Mass

Question 8 An atom with the same atomic number, but different number of electrons. Ion

Question 9 Scientist who came up with the plum pudding model. Thomson

Question 10 Scientist who came up with the quantum mechanical model. Schrodinger

Question 11 Electrons found in the outermost shell that are responsible for the properties of the element. Valence Electrons

Question 12 Horizontal row of the periodic table. Period

Question 13 Scientist who stated electrons travel in definite paths called orbits. Bohr

Question 14 Vertical column of the periodic table. Group

Question 15 Dense center of an atom where all of the mass is found. Nucleus

Question 16 Negative subatomic particles found orbiting the nucleus. Electrons

Question 17 Scientist who discovered the electron. Thomson

Question 18 First scientist to state that atoms are indivisible and indestructible. Democritus

Question 19 Scientist who stated that we cannot determine the exact location of an electron, but we can find probability of the electron existing in a particular space (electron cloud model) Schrodinger

Question 20 The periodic table is organized by increasing _____________ Atomic Number

Question 21 In a neutral atom, the number of protons equals the number of ________ Electrons