Match each definition in Column A with the term in Column B. Column B 4 Understanding Main Ideas (Part A) CHAPTER Name 1. atomic number 65 Class Reviewing Vocabulary The Structure of the Atom CHAPTER Name Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc. T168 Chemistry: Matter and Change Chapter Assessment Answer Key CHAPTER Name 4 Date CHAPTER ASSESSMENT Class of protons is 4 8. Isotope in which the difference between the neutrons and number 7. Chromium with two more neutrons than its number of
½ mark 10 Outline the reaction pathway to produce propanoic acid from propane. Write the chemical reactions (using chemical structures) indicating reactants and any special conditions. 2 marks 11 Name all the chemical species in Q10 using the IUPAC system. 1 mark 12 If you put the product formed in Q10 in a basic solution, what would the resulting ion look like? 1 mark 13a Indicate the chemical equation when your product from question 10 undergoes a
2) A compound with an empirical formula of C4H4O and a molar mass of 136 grams per mole. 3) A compound with an empirical formula of CFBrO and a molar mass of 254.7 grams per mole. 4) A compound with an empirical formula of C2H8N and a molar mass of 46 grams per mole. a. P2O3 b. C2H3 c. CH3O d. BrCl2 e. C3H4O3 f. C5H11 g. CuCO2 h. HgF 2. a. Fe3O4 b. CCl2F2 c. CH2 3. a. C5H10 b. NO2 Molecular Formula Worksheet ANSWER KEY Write the molecular formulas of the following compounds: 1) A compound with an empirical formula of C2OH4 and a molar mass of 88 grams per mole. C4O2H8 2) A compound with an empirical formula of C4H4O and a molar mass of 136 grams per mole.
A. 1.99 x 10-25 B. 9.55 x 10-25 C. 6.62 x 1016 D. 1.51 x 10-17 E. 1.51 x 10-26 4. Of the following transitions in the Bohr hydrogen atom, the __________ transition results in the emission of the highest-energy photon. A. n = 3 n
The ULTIMATE Chemistry Semester 2 Study Guide! Iron: Fe+2 is ferrous Fe+3 is ferric Copper: Cu+1 is cuprous Cu+2 is cupric Lead: Pb+2is plumbous Pb+4 is plumbic Tin: Sn+2 is stannous Sn+4 is stannic Periodic Table TRENDS * As you move right along the periodic table… decreasing atomic radius, increasing ionization energy, increasing electronegativity, increasing electron affinity, constant shielding * As you move down the periodic table… increasing atomic radius, decreasing ionization energy, decreasing electronegativity, increasing shielding WTF is that stuff? * Atomic radius is the distance between the nuclei of atoms when they are involved in a chemical bond. As you increase the number of protons in the nucleus
Conclusion 10 Grams of Potassium chlorate when decomposed produces 3.915576 grams oxygen gas and 6.083363 grams potassium chloride Atomic Weight of Magnesium Introduction In this lab we will determine the atomic weight of magnesium by measuring the amount of hydrogen gas evolved when hydrochloric acid reacts with magnesium. The reaction is as follows: Mg + 2HCl -> H2 + Mg2+ (aq) + 2Cl- (aq) There is a one to one relationship between the number of moles of hydrogen gas evolved and the
Astronomy 10 Chapter 11 1. Both used to be normal stars but the white dwarf ran out of hydrogen, they are both subjected to gravitational theories. A Neutron star is a fluid of neutrons, as hot at its surface as the inside of the sun and has a greater magnetic field. 3. Because its density is so high, neutrons spin in the same way that electrons do so must obey the Pauli Exclusion Principle.
Concept Explorations 8.29. Periodic Properties I A hypothetical element, X, has the following ionization energy values: First ionization energy: 900 kJ/mol Second ionization energy: 1750 kJ/mol Third ionization energy: 14,900 kJ/mol Fourth ionization energy: 21,000 kJ/mol Another element, Y, has the following ionization energy values: First ionization energy: 1200 kJ/mol Second ionization energy: 2500 kJ/mol Third ionization energy: 19,900 kJ/mol Fourth ionization energy: 26,000 kJ/mol * a. To what family of the periodic table would element X be most likely to belong? Explain? * X belongs to Group 2 of the periodic table because it has a low first and second ionization energy, however, a higher second and third.
1 / [CO2] C. [CaO][CO2] / [CaCO3] D. [CaCO3] / [CaO][CO2] _____ 13. The value of Kp for the reaction 2 NO2 (g) [pic] N2O4 (g) is 1.52 at 319 K. What is the value of Kp at this temperature for the reaction N2O4 (g) [pic] 2 NO2 (g) ? A. -1.52 B. 1.23 C. 5.74 X 10-4 D. 0.658 _____ 14.
It can also reacts with oxygen at high temperatures. Gadolinium has a hexagonal closely packed structure at ambient temperatures, but transforms at temperature of 1262 degree Celsius to a body centred cubic structure. This metal is paramagnetic at room temperature, but becomes ferromagnetic (strongly attracted by a magnet) when cooled below 20degrees Celsius and also shows the magnetoric effects ( meaning that when entering magnetic fields its temperature rises and its temperature decrease when exiting magnetic fields. Gadolinium has a greatest ability to capture thermal neutrons of all elements; and stable in dry air, but tarnishes off in moist environments forming gadolinium (III) oxide. It has a melting point of 1585K (which is the same as 1312°C 2394°F), heat of fusion of 10,05 kJ/mol, and boiling point of 3546 K( 3273 °C, 5923 °F).