Example Items. Chemistry Pre-AP

Transcription

1 Example Items hemistry Pre-P hemistry Pre-P Example Items are a representative set of items for the P. Teachers may use this set of items along with the test blueprint as guides to prepare students for the P. On the last page, the correct answer, content SE and SE justification are listed for each item. The specific part of an SE that an Example Item measures is NOT necessarily the only part of the SE that is assessed on the P. None of these Example Items will appear on the P. Teachers may provide feedback regarding Example Items. (1) ownload the Example Feedback Form and it. The form is located on the homepage of ssessment.dallasisd.org. OR (2) To submit directly, click Example Feedback after you login to the ssessment website. First Semester ode #: 3201

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4 HO NH 4 + HO 3 HO NH 4 + NO 3 l I OH NO 3 NO 2 NH 4 + NH 4 + NH 4 + MnO 4 NH 4 + OH + NH 4 + NH 4 STRTM State of Texas ssessments of cademic Readiness

5 STRTM State of Texas ssessments of cademic Readiness H Hydrogen Li e Lithium eryllium Na Mg Sodium Magnesium K a Sc Ti V tomic number Symbol tomic mass r Mn 14 Si Silicon Potassium alcium Scandium Titanium Vanadium hromium Manganese Iron obalt Rb Sr Y Zr Nb Mo Tc Ru (98) Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium s a Lu Hf Ta W Re Os esium arium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Fr Ra Lr Rf b Sg h Hs Mt (223) (226) (262) (267) (268) (271) (272) (270) (276) Lawrencium Francium Radium Rutherfordium ubnium Seaborgium ohrium Hassium Meitnerium Fe o Rh Ir Name Ni Pd Pt 29 u g u Zn d Hg 13 3 Ga Tl 14 4 Ge Pb 15 5 s 16 6 In Sn Sb Te I i Se Po 17 7 r t 18 8 He Helium N O F Ne oron arbon Nitrogen Oxygen Fluorine Neon l Si P S l r luminum Silicon Phosphorus Sulfur hlorine rgon Nickel opper Zinc Gallium Germanium rsenic Selenium romine Krypton Palladium Silver admium Indium Tin ntimony Tellurium Iodine Xenon (209) (210) (222) Platinum Gold Mercury Thallium Lead ismuth Polonium statine Radon 110 s 111 Rg (281) (280) armstadtium Roentgenium Mass numbers in parentheses are those of the most stable or most common isotope. 2 Kr Xe Rn Lanthanide Series ctinide Series 57 La Lanthanum 89 c (227) ctinium 58 e erium 90 Th Thorium 59 Pr Praseodymium 91 Pa Protactinium 60 Nd Neodymium 92 U Uranium 61 Pm (145) Promethium 93 Np (237) Neptunium 62 Sm Samarium 94 Pu (244) Plutonium 63 Eu Europium 95 m (243) mericium 64 Gd Gadolinium 96 m (247) urium 65 Tb Terbium 97 k (247) erkelium 66 y ysprosium 98 f (251) alifornium 67 Ho Holmium 99 Es (252) Einsteinium 68 Er Erbium 100 Fm (257) Fermium 69 Tm Thulium 101 Md (258) Mendelevium 70 Yb Ytterbium 102 No (259) Nobelium Updated Spring 2011

6 EXMPLE ITEMS hemistry Pre-P, Sem 1 1 What is the Lewis electron dot structure for the covalent compound sulfur dioxide? 2 n unknown element was recently discovered and found to have the characteristics shown in the table. haracteristics of? 1. Shares 1 electron or gains 1 electron to attain a stable noble gas configuration. 2. Is very reactive. 3. Is a gas at room temperature. 4. Readily forms salts. In which group does the unknown element most likely belong? lkali Metals lkaline Earth Metals Halogens Transition Metals 3 14-karat gold ring consists of 14 parts gold and 10 parts copper. This alloy can be separated by density when melted. Which type of matter is the 14-karat gold ring? ompound Pure substance Homogeneous mixture Heterogeneous mixture allas IS - Example Items

7 EXMPLE ITEMS hemistry Pre-P, Sem 1 Use the electromagnetic spectrum to answer the next question. 4 Which type of electromagnetic waves have the greatest energy? Gamma rays Microwaves Radio waves Visible light 5 What is the percent composition of phosphorus in the compound a3(po4)2? 10.0% 20.0% 30.0% 50.0% 6 n unbalanced chemical reaction is shown. Snl 4 Fe Snl 2 Fel3 When the equation is balanced, what is the coefficient of Snl2? allas IS - Example Items

8 EXMPLE ITEMS hemistry Pre-P, Sem 1 7 Matter exists as a solid, a liquid or a gas. The solid state is distinguished by its ability to be easily compressible take the shape of a container have particles of low density maintain an ordered pattern 8 Which represents the ground state electron configuration for manganese? 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 5 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 4d 5 1s 2 2s 2 2p 6 3s 2 3p 6 4s 7 1s 2 2s 2 2p 6 3s 2 3p 6 4d 7 9 What is the formula of the compound lead (IV) phosphide? Pb3P 4 Pb4P 3 PPb 3 4 PPb What causes the atomic radius of the elements to decrease across Period 3 from left to right? The shielding effect The decreasing metallic character The increasing nuclear charge The increasing number of neutrons 11 etermine the number of molecules in 11 grams of O allas IS - Example Items

9 EXMPLE ITEMS hemistry Pre-P, Sem 1 12 The Electron Sea Model explains why metals are excellent conductors are very reactive accept electrons easily form ionic compounds 13 What is the name of the compound Fel 3? Iron chloride Iron trichloride Iron tetrachloride Iron (III) chloride 14 Which statement is a chemical property of copper? It is a mineral. It is a liquid at It reacts with nitric acid. It is malleable and ductile. 15 Which is an example of an empirical formula? HO 2 2 NO 2 2 H 3 2 H 2 6 allas IS - Example Items

10 EXMPLE ITEMS hemistry Pre-P, Sem 1 16 The figure shows a cathode ray tube. In 1897, J.J. Thomason used a device like the one shown to discover that cathode rays were streams of photons electrons protons ions allas IS - Example Items

11 EXMPLE ITEMS hemistry Pre-P, Sem 1 17 The table shows the two isotopes of an unknown element. Isotope Mass (amu) Percent bundance x % verage Mass y % verage tomic Mass? What is the average atomic mass of the unknown element? (Express the answer to three significant figures.) Record the answer and fill in the bubbles on the grid provided. e sure to use the correct place value. allas IS - Example Items

12 EXMPLE ITEMS hemistry Pre-P Key, Sem 1 Item# Key SE Process Skills SE Justification 1.7 2I 2.5 2H H, 2I onstruct electron dot formulas to illustrate covalent bonds. Use the Periodic Table to identify and explain the properties of chemical families including halogens. lassify matter as pure substances or mixtures through investigation of their properties. escribe the mathematical relationships between energy, frequency, and wavelength of light using the electromagnetic spectrum G alculate percent composition of compounds. 6.8E 2G H G F H, 2G alance chemical equations using the law of conservation of mass. ompare solids, liquids, and gases in terms of, structure. Express the arrangement of electrons in atoms using electron configurations. Write the chemical formulas of ionic compounds containing representative elements. Interpret periodic trends including atomic radius using the Periodic Table. alculate the number of molecules in a sample of material using vogadro s number. escribe metallic bonding and explain electrical conductivity. Name ionic compounds containing transition metals using the International Union of Pure and pplied hemistry (IUP) nomenclature rules. ifferentiate between physical and chemical properties. ifferentiate between empirical and molecular formulas. escribe the experimental design and conclusions used in the development of modern atomic theory, including Thomson's discovery of electron properties. alculate average atomic mass of an element using isotopic composition.