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Name: ______________________________________________ 1.2 Atomic Symbols Announcements DATE: 8/17/16 OBJECTIVES: Student will be able to HAVE OUTS: Construct complete atomic symbols for any given Marvel Card element based on the number of subatomic Pencil particles, atomic number, and or mass number. Parents Sign Syllabus (if you forgot yesterday) Interpret complete atomic symbols for any given element to determine the number of subatomic HOMEWORK: particles Atomic Symbols Practice Buy Supplies (Due Friday) AGENDA: Do First Do First: Notes Scientist matching problems Practice IMPORTANT DATES: 8/19- Atomic Theories, Mass, and Symbols Quiz 8/19- Lab 1 Do First: Directions: Put the number of the definition from the list projected into the square with the appropriate term. Check your answers by adding the numbers to see if all the sums of all rows, both across and down add up to the same number, the Magic #. Democritus Dalton Thomson Chadwick Total _____ _____ _____ ______ _____ Rutherford Proton Atom Bohr _____ _____ _____ _____ _____ Wave Model Neutron Nucleus Alpha particle _____ _____ _____ _____ Electron Model Energy levels Electron cloud _____ ______ _____ _____ Total _____ _____ _____ ______ Magic Number ______ _____ _____ Name: ______________________________________________ 1.2 Atomic Symbols Other Information about Each of the Subatomic Particles Subatomic Particle Mass (in amu) Role in the Atom Protons Neutrons Electrons amu (atomic mass unit) = a very small unit of mass used to measure the mass of subatomic particles/a single atom Periodic Table: What’s missing from the periodic table? ___________________________ A Complete NAMES for a specific atom. P Name of the Element – Mass Number E M A N Example: Complete SYMBOLS for a specific atom. Mass Number Atomic Number Element Symbol Example: Example #1 Protons = Neutrons = Electrons = Atomic Number = Mass Number = Name = Complete Symbol = Key Fact Protons = Example #2 Neutrons = 206 82 Pb Electrons = Atomic Number = Mass Number = Name = Complete Symbol = Name: ______________________________________________ Example #3 1.2 Atomic Symbols Protons = Neutrons = Electrons = Atomic Number = Mass Number = Name = Complete Symbol = Fill in the table based on the symbols and subatomic particles Mr. Marshall provides. Once you have completed all of the rows, answer the analysis questions. Symbol Protons Neutrons Analysis Questions: 1. How did you determine the atomic number? 2. How did you determine the mass number? 3. Were any of the atoms isotopes? How could you tell? Electrons Atomic Number Mass Number Name: ______________________________________________ 1.2 Atomic Symbols Homework: Review of Atomic Structure Complete the following sentences by writing in the correct word. 1. In a neutral atom, the number of electrons must be the same as the number of . 2. The subatomic particle in an atom with no charge is the . 3. The number of protons in an atom is the number. 4. The total number of protons and neutrons in an atom is the number. Study the following model of an atom and answer the following questions about it. 5. How many electrons does this atom have? 6. How many protons does this atom have? 7. How many neutrons does this atom have? 8. What is the atomic number of this atom? 9. What is the mass number of this atom? 10. Find the name of this element by referring to the periodic table. Complete the following chart. Name Symbol Atomic Number 16 15 7 N Mass Number 34 Protons Neutrons 10 11 Electrons Name: ______________________________________________ Practice Problems for Atomic Symbols 1. How many protons and electrons are present in a vanadium atom? 2. How many protons and electrons are present in a nitrogen atom? 3. How many protons and electrons are present in a potassium atom? 4. What is the name of the element that contains 5 protons? 5. What is the name of the element that has atoms that contain 5 protons? 6. What is the name of the element that has atoms that contain 17 protons? 7. What is the name of the element that has atoms that contain 82 protons? 8. What is the name of the element that has atoms that contain 92 protons? 1.2 Atomic Symbols Name: ______________________________________________ 1.2 Atomic Symbols 1) Represented by a symbol; all are found on the Periodic Table 2) Made a mental model of the atom; Greek philosopher 3) Used by Rutherford in his experiment; made of two protons and two neutrons 4) The paths in which electrons circle the nucleus according to the Bohr model 5) The positive particle in the nucleus of an atom 6) The tiny positive core of an atom; contains protons and neutrons 7) Formed the atomic theory model of the atom; English schoolteacher 8) Discovered the nucleus using his gold foil experiment 9) Current explanation of where electrons might be found in the atom 10) Used by scientists to explain something we cannot see or understand 11) The smallest particle of an element that has the properties of that element 12) Discovered the neutron 13) Current model of the atom; proposed by Schrodinger 14) Mass of protons and neutrons 15) Developed the model of the atom in which electrons orbit the nucleus in energy levels 16) The negative particle that circles the nucleus 17) The neutral particle in the nucleus of an atom 18) Proposed the “plum-pudding” model of the atom; discovered the electron