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OBJECTIVE FINAL REVIEW PART 1 SUBTITLE 1. Where are the subatomic particles of an atom? Proton Neutrons Electrons 2. What are the charges of the subatomic particles ? Protons are positively (+)charged Neutrons are neutral (0) Electrons are negatively (-)charged 3. Where are the 3 subatomic particles located? Made up of: Protons--inside nucleus Neutrons--inside nucleus Electrons--outside nucleus in the cloud 4. Which subatomic charge determines the charge of atom? If there are more protons than electrons-the charge of the atom will be positive If there are more electrons than protons-the charge of the atom will be negative If the protons are equal to the electrons-the atom will have a neutral charge 5. Which subatomic particle determines the chemical reactivity of the atom? The chemical reactivity is determined by the valence electrons--the number of electrons in the outermost shell 6. What does the atomic number of an element refer to? The atomic number is equal to the number of protons in the nucleus A = Atomic Number These are all equal to each P = Proton Number other E = Electron Number 7. How can atomic mass be calculated? M = Mass Number A = Atomic Number (Proton #) N = NeutronNumber Protons + Neutrons = Mass Number 8. Fill in the chart. Proton + 1 amu Nucleus Neutron Neutral 1 amu Nucleus Electron - .00054 amu Electron Cloud 9. Label picture and sentences. Atomic Number Symbol Name Atomic Mass Atomic number equals the number of Protons Electrons ____________ or ______________. Atomic mass equals the number of Protons Neutrons _____________ + ______________. Group/Family _____________________ Properties _____________________ Period _____________________ Non-metals _____________________ 10. Vertical column in the Periodic Table. 11. Elements in the same family have similar ___. 12. Horizontal row on the Periodic Table. 13. Elements on the right side of the Periodic Table. Valence Electrons14. _____________________ Number of electrons in the outer most shell. Ductile _____________________ 15. If it can be drawn or pulled into wires, it is ___. Energy Levels ____________________________ 16. The period tells what row an element is in or how (shells) many ___ are used. Metals ____________________________ 17. Elements on the left side of the Periodic Table. Transition Metals ____________________________ 18. Elements in Groups 3-12 on Periodic Table. Noble Gases ______________________ 19. Elements in Group 18; they are unreactive. Metalloid ______________________ 20. Touches the zig-zag line; has properties similar to both metal and non-metal. Malleable ______________________ 21. If it can be bent or hammered into shape it is ___. Alkali Metals ______________________ 22. Most reactive metals. Periods 23. Organization of the Periodic Table of Elements Metals Metalloids Non-metals Noble Gases Groups 24. Fill in the chart Symbol Na P Xe Si Proton # Atomic # Mass # 11 15 54 14 11 15 54 14 23 31 131 28 Electron # 11 15 54 14 Neutron # 12 16 77 14 Metal, Nonmetal Valence # Metalloid or Noble Gas Group # Electron # Period # Metal Nonmetal Noble Gas Metalloid 1 15 18 14 1 5 8 4 3 3 5 3 25. As you go down the periodic table, the number of energy levels Increases 26. List the properties of metals Luster a. _________________________________________ Malleable b. _________________________________________ Ductile c. _________________________________________ Great Conductors d._________________________________________ High Melting Points e. _________________________________________ High Density f. _________________________________________ 27. List the properties of nonmetals Dull a. ____________________________________________ Brittle b. _____________________________________________ Poor Conductors c. _____________________________________________ Low Melting Points d. _____________________________________________ Low Density e. _____________________________________________ 28. What do elements in the same group have in common? Have the same number of valence electrons Similar properties 29. How do you determine the number of atoms in a compound 4K2CO3 3Ba3(PO4)2 Type of Atom # of Atoms Type of Atom # of Atoms K ______________ ______ _______________ ______ - Potassium 8 Ba - Barium 9 - Carbon P - Phosphorus ______ C ______________ ______ _______________ 4 6 - Oxygen O - Oxygen 24 12 O ______________ ______ _______________ ______ 39 24 Total ______ Total ______ 30. What are the signs of a chemical reaction? Remember: Color City Girls Like Their Phones On Change Gas Produced (bubbles) Light emitted Temperature change Precipitate Formed Odor Let off 31. Which diagram best demonstrates the law of conservation of mass? 4Fe + 3O2 2Fe2O3 32. The numbers after the symbols and formulas in the chemical reaction above are called A. Subscripts B. Superscripts C. Fractions D. Coefficients 4Fe + 3O2 2Fe2O3 33. Each substance to the right of the arrow in the equation given above is a A. Catalyst B. Precipitate C. Reactant D. Product 4Fe + 3O2 2Fe2O3 34. Each to the left of the arrow in the equation given is a A. Catalyst B. Precipitate C. Reactant D. Product 4Fe + 3O2 2Fe2O3 35. The numbers before formulas in the chemical reaction that are added to balance the above are called A. Subscripts B. Superscripts C. Fractions D. Coefficients 36. How do you know that the reaction is balanced? 4Fe + 3O2 2Fe2O3 4 Fe 6 O 4 Fe 6 O