Example Items. Chemistry

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1 Example Items hemistry hemistry 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 () To submit directly, click Example Feedback after you login to the ssessment website. First Semester ode #: 3101

2 STR HEMISTRY REFERENE MTERILS STRTM State of Texas ssessments of cademic Readiness TOMI STRTRE S=r r=r r= EHIOR OF SES rrr rr=( ) rr=rr R rr rr rr rr rr=rr rr rr SOLTIONS r r r r r= r r ( )( ) ( r = r )( ) ( )( ) + =rrr THERMOHEMISTRY r= ( )( ) rr = r r ( ) ( r) r r

3 STR HEMISTRY REFERENE MTERILS OTHER FORMLS r rrrr=( ) r=( r ) ONSTNTS N ONERSIONS r r r r r α r r β ( ) r rrrrrs= = S == R r= r=r=r RLES FOR SINIFINT FIRES rrrr rr rrrr rrr rrrrrr rrr

4 I STR HEMISTRY R E F ERENE M TERILS POLYTOMI IONS SOLILITY OF OMMON IONI OMPONS IN TER HO 3 NH 4 + r r r r r r r rr HO 3 S HO 3 NH 4 + NO 3 r l I r OH S Sr r r NO 3 r NO I NH 4 + NH 4 + rr r NH 4 + r MnO 4 r NH 4 + OH + NH 4 + Sr + + S S S S S + NH 4 + Sr + + TIITY SERIES M r S r r r r rr Sr

5 STR HEMISTRY REFERENE MTERILS PERIOI TLE OF THE ELEMENTS H Hydrogen 3 4 Li e Lithium eryllium 11 1 Na Mg Sodium Magnesium 19 0 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 (3) (6) (6) (67) (68) (71) (7) (70) (76) Lawrencium Francium Radium Rutherfordium ubnium Seaborgium ohrium Hassium Meitnerium Fe o Rh Ir Name Ni Pd Pt 9 u g u 1 30 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 (09) (10) () Platinum Gold Mercury Thallium Lead ismuth Polonium statine Radon 110 s 111 Rg (81) (80) armstadtium Roentgenium Mass numbers in parentheses are those of the most stable or most common isotope. Kr Xe Rn Lanthanide Series ctinide Series 57 La Lanthanum 89 c (7) ctinium 58 e erium 90 Th Thorium 59 Pr Praseodymium 91 Pa Protactinium 60 Nd Neodymium 9 U Uranium 61 Pm (145) Promethium 93 Np (37) Neptunium 6 Sm Samarium 94 Pu (44) Plutonium 63 Eu Europium 95 m (43) mericium 64 Gd Gadolinium 96 m (47) urium 65 Tb Terbium 97 k (47) erkelium 66 y ysprosium 98 f (51) alifornium 67 Ho Holmium 99 Es (5) Einsteinium 68 Er Erbium 100 Fm (57) Fermium 69 Tm Thulium 101 Md (58) Mendelevium 70 Yb Ytterbium 10 No (59) Nobelium Updated Spring 011

6 EXMPLE ITEMS hemistry, Sem 1 1 Which is a chemical property of copper? It is a mineral. It reacts with nitric acid. It is a liquid at It is malleable and ductile. What is the number of atoms in three grams of gold? The unbalanced equation for the synthesis of aluminum oxide is shown.? l( s ) + _? O( g)? l O ( s) 3 Which list shows the order of coefficients needed to balance this equation?, 3, 1, 1, 4, 1, 4, 3, 4 The table shows the percent composition of a compound containing hydrogen and oxygen. Element Percent omposition Hydrogen 11.19% Oxygen 88.81% What is the empirical formula for this compound? HO HO H11O 6 H11O 89 allas IS - Example Items

7 EXMPLE ITEMS hemistry, Sem 1 5 How many grams are there in one mole of luminum? Gold is classified as a pure substance. Which of its properties supports this classification? Gold occurs in nature as a solid. Gold is resistant to rust and tarnish. Gold has a high melting point. Gold is made of one kind of atom. 7 What is the formula of calcium permanganate? amno 4 a( MnO 4 ) a3mno 4 a3 ( MnO 4) 3 8 Which chemical family or group on the Periodic Table contains the least reactive elements? Group 1 Group 3 Group 17 Group 18 9 The Electron Sea Model explains why metals accept electrons easily are excellent conductors are mostly brittle form ionic compounds allas IS - Example Items

and equal pressure is applied as shown in the illustration. Which statement describes the result of this experiment? The liquid has less mass than the gas.

8 EXMPLE ITEMS hemistry, Sem 1 10 What is the name of the molecular compound with the formula P O 5? Pentaphosphorus dioxide ecaphosphorus pentoxide iphosphorus pentoxide iphosphorus monoxide 11 Equal volumes of a liquid and a gas are placed in separate containers, and equal pressure is applied as shown in the illustration. Which statement describes the result of this experiment? The liquid has less mass than the gas. The liquid has more mass than the gas. The gas is less compressible than the liquid. The gas is more compressible than the liquid. 1 What is the Lewis electron dot structure for the covalent compound sulfur dioxide? allas IS - Example Items

9 EXMPLE ITEMS hemistry, Sem 1 13 Which represents the ground state electron configuration for manganese? 1s s p 6 3s 3p 6 4s 3d 5 1s s p 6 3s 3p 6 4s 4d 5 1s s p 6 3s 3p 6 4s 7 1s s p 6 3s 3p 6 4d 7 Use the electromagnetic spectrum to answer the next question. 14 Which type of electromagnetic waves have the greatest energy? Gamma rays Microwaves Radio waves Visible light 15 If a beam of blue light has a frequency of Hz, its wavelength is m m m m allas IS - Example Items

EXMPLE ITEMS hemistry, Sem 1 16 The table shows the two isotopes of an element. Isotope Mass (amu) Percent bundance verage Mass x 10.013 19.8% y 11.009 80.% verage tomic Mass?

10 EXMPLE ITEMS hemistry, Sem 1 16 The table shows the two isotopes of an element. Isotope Mass (amu) Percent bundance verage Mass x % y % verage tomic Mass? What is the average atomic mass of the 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

11 EXMPLE ITEMS hemistry, Sem 1 17 Electronegativity measures the ability of atoms to attract a bonding pair of electrons. Which diagram correctly identifies both the period and group trends for electronegativity in the Periodic Table? allas IS - Example Items

12 EXMPLE ITEMS hemistry Key, Sem 1 Item# Key SE Process Skills SE Justification 1 HEM.4 -- HEM.8 G 3 HEM.8 G ifferentiate between physical and chemical changes and properties. Use the mole concept to calculate the number of atoms, in a sample of material. Use the law of conservation of mass to chemical equations. 4 HEM.8 H alculate molecular formulas. 5 HEM.8 G Use the concept of a mole. 6 HEM HEM HEM.5 H 9 HEM HEM HEM.4 H, I 1 HEM.7 I 13 HEM.6E HEM.6 H, I 15 HEM.6 G HEM.6 H, G 17 HEM.5 H lassify matter as pure substances or mixtures through investigation of their properties. Write the chemical formulas of common polyatomic ionic compounds containing main group or transition metals. Use the Periodic Table to identify and explain the properties of chemical families, including noble gases. pply the theory of metallic bonding to explain the electrical conductivity of metals. Name covalent compounds using International Union of Pure and pplied hemistry (IUP) nomenclature rules. ompare liquids, and gases in terms of compressibility. onstruct electron dot formulas to illustrate covalent bonds. Express the arrangement of electrons in atoms through electron configurations. Understand the electromagnetic spectrum and the mathematical relationships between energy, frequency, and wavelength of light. alculate the wavelength of light using its frequency and the speed of light. Use isotopic composition to calculate average atomic mass of an element. Use the Periodic Table to identify and explain periodic trends, including electronegativity.

Example Items. Chemistry Pre-AP

Example Items. Chemistry Pre-AP 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