d) Fluorine and Astatine h) Carbon and Astatine. 15. Find the number of protons, neutrons and electrons for the following atoms: a) Argon d) Manganese...
Final Review #2 December 11, 214 1) Define the following: a) Nucleon b) Ground State c) Excited State d) Neutron e) Energy Level f) Isotope g) Atomic Mass
h) Atomic Number i) Electron Configuration k) Sublevel l) Orbital m) Calorimetry n) Alkali Metals o) Mole
2. What is the difference between carbon-12, carbon-13 and carbon-14? 3. Give the chemical formula for each of the following compounds: a) Aluminum chlorate c) Potassium dichromate
b) Ammonium sulfate d) Magnesium hydroxide
e) Sodium Phosphate f) Calcium Carbonate
4. What is the ground state of an atom? How does an atom become excited? How does it lose that energy? 5. Do the electron configurations for the following elements. a) Molybdenum c) Europium e) Californium
b) Polonium d) Antimony f) Osmium
6. Answer the following questions as indicated. __ C4H8 + __ O2 ---> __ CO2 +__ H2O a) Balance the chemical equation. b) How many moles of O2 will react with 2.013 moles of C4H8?(12.08moles O2) c) How many grams of H2O will form if 2.9 moles C4H8 react?(210g H2O) d) How many grams of CO2 will form if 236.8g of O2 react?(217.1g CO2) 7. How do electrons compare in size to the nucleons? 8. Where are electrons, protons and neutrons found? 9. Where is most of the mass of the atom? 10. How does an electrons distance from the nucleus relate to its potential energy? 11. Of the following pairs of elements, circle the element with the greatest ionization energy. a. Lithium and Oxygen b. Sodium and Francium
c. Sodium and Magnesium d. Potassium and Bromine
12. Where are the metalloids found? List 4. 13. The questions below relate to the following equation. First balance the equation. __ PbF4 + __ Al2O3 __ AlF3 +__ PbO2 a) How many moles of AlF3 will form if 2.6moles of PbF4 react?(3.5moles AlF3) b) How many grams of PbO2 will form if .2.44g of Al2O3 react?(1.17g PbO2) c) How many grams of Al2O3 are needed if 123.6g of PbO2 are wanted?(36.17g Al2O3) 14. Of the following pairs of elements, circle the element with the greatest atomic radius. a) b) c) d)
Sodium and Chlorine Lithium and Francium Iron and Bromine Fluorine and Astatine
e) Sulfur and Tin f) Sodium and Bromine g) Chlorine and Francium h) Carbon and Astatine
15. Find the number of protons, neutrons and electrons for the following atoms: a) Argon b) Uranium c) Mercury
d) Manganese e) Plutonium-248 f) Bismuth-211
+2
+4
g) Ba -1 h) Br
i) Sb
16. Where are the metalloids found? List 4. 17. Carbon has an atomic mass of 12.01g. How many atoms are there in 1 mole of carbon? 18. How many molecules of MgCO3 are there in 3.5x103g of MgCO3?(2.5x103molecules of MgCO3) 19. A sample of a compound contains, 0.150g of sulfur and 0.300 g of oxygen? a) Find the empirical formula of this compound. b) Find the percent composition of each element in this comound. 20. Determine the empirical formula for the compounds below. a) 75% carbon, 25% hydrogen b) 52.7% potassium, 47.3% chlorine c) 22.1% aluminum, 25.4% phosphorus, 52.5% oxygen
21. Using the solubility rules, write a balanced chemical equation for each of the following:
a. KCl(aq) + AgNO3(aq) → _____ + ______ b. KNO3(aq) + BaCl2(aq) → _____ + ______ c. Na2SO4(aq) + Pb(NO3)2(aq) → _____ + ______ d. NaOH(aq) + Fe(NO3)3(aq) → _____ + ______ e. Hg2(NO3)2(aq) + KF(aq) → _____ + ______ f. MgSO4(aq) + KF (aq) → _____ + ______ g. Cr(C2H3O2)3(aq) + Li3PO4(aq) → _____ + ______
