Worksheet #2 - Chemistry Worksheet PDF

Worksheet - Worksheet #2 Student Name: Camille Gayle Date: 07/22/2024 10:05 PM Login Name: CGAYLE325 Class Name: T. Howard Sangiorgi - Chem 1013-01 Summer 2024 - SAN...

Worksheet - Worksheet #2 Student Name: Camille Gayle Date: 07/22/2024 10:05 PM Login Name: CGAYLE325 Class Name: T. Howard Sangiorgi - Chem 1013-01 Summer 2024 - SANGIORGI Review Questions 1. Fill in the name and empirical formula of each ionic compound that could be formed from the ions in this table: Some ionic compounds cation anion empirical formula name of compound + 2− NH4 CO3 + 2− Na CrO4 + − K CH3 CO2 2. Decide whether each pair of elements in the table below will form an ionic compound. If they will, write the empirical formula and name of the compound formed in the spaces provided. element element Forms ionic empirical formula of ionic name of ionic #1 #2 compound? compound compound -yes chlorine barium -no -yes bromine sulfur -no -yes sodium sulfur -no -yes sodium chlorine -no 3. Draw the Lewis dot diagram for a neutral atom of N. Worksheet #2 Page 1 / 6 Copyright © 2024 McGraw Hill - ALEKS® is a registered trademark of ALEKS Corporation  4. Complete the table below by writing the symbols for the cation and anion that make up each ionic compound. The first row has been completed for you. ionic cation anion compound + − NaCl Na Cl CoS MnF4 NiBr2 CrCl3 5. Complete the following table: two polyatomic anions name chemical formula sulfate anion − IO3 6. Re-order each list in the table below, if necessary, so that the atoms or ions in it are listed in order of decreasing size. atoms or ions in order atoms or ions of decreasing size 2− ___, ___, ___ Se, Br, Se Cl, Br, F ___, ___, ___ Al, Ar, Si ___, ___, ___ 7. Draw the electron configuration for a neutral atom of helium. 8. Write the ground-state electron configuration for a neutral atom of each element: chromium manganese Worksheet #2 Page 2 / 6 Copyright © 2024 McGraw Hill - ALEKS® is a registered trademark of ALEKS Corporation  9. A + 3 cation of a certain transition metal has three electrons in its outermost d subshell. Which transition metal could this be? Shade all the possibilities in the Periodic Table outline below. 1A 8A 1 H 2A 3A 4A 5A 6A 7A He 2 Li Be B C N O F Ne 3 Na Mg 3B 4B 5B 6B 7B --- 8B --- 1B 2B Al Si P S Cl Ar 4 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr 5 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe 6 Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn 7 Fr Ra Ac Rf Db Sg Bh Hs Mt Ds Rg Cn 10. For each row in the table below, decide whether the pair of elements will form a molecular or ionic compound. If they will, then enter the chemical formula of the compound. If the elements will form more than one compound, enter the compound with the fewest total number of atoms. You may assume all chemical bonds are single bonds, not double or triple bonds. element #1 element #2 compound formed? chemical formula ionic calcium magnesium molecular neither ionic lithium sodium molecular neither ionic xenon radon molecular neither Worksheet #2 Page 3 / 6 Copyright © 2024 McGraw Hill - ALEKS® is a registered trademark of ALEKS Corporation  11. Decide whether these proposed Lewis structures are reasonable. proposed Lewis structure Is the proposed Lewis structure reasonable? A. Yes. B. No, it has the wrong number of valence electrons. The correct number is: ______ C. No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* ______ proposed Lewis structure Is the proposed Lewis structure reasonable? A. Yes. B. No, it has the wrong number of valence electrons. The correct number is: ______ C. No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* ______ proposed Lewis structure Is the proposed Lewis structure reasonable? A. Yes. B. No, it has the wrong number of valence electrons. The correct number is: ______ C. No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* ______ * If two or more atoms of the same element don't satisfy the octet rule, just enter the chemical symbol as many times as necessary. For example, if two oxygen atoms don't satisfy the octet rule, enter "O,O". Worksheet #2 Page 4 / 6 Copyright © 2024 McGraw Hill - ALEKS® is a registered trademark of ALEKS Corporation  12. In each of the molecules drawn below one chemical bond is colored red. Decide whether this bond is likely to be polar or not. If the bond is likely to be polar, write down the chemical symbol for the atom which will have more negative charge. The highlighted bond is polar and H C C H the more negative atom is The highlighted bond is nonpolar. The highlighted bond is polar and Cl Cl the more negative atom is The highlighted bond is nonpolar. The highlighted bond is polar and Cl F the more negative atom is The highlighted bond is nonpolar. 13. A student sets up the following equation to convert a measurement. (The ? stands for a number the student is going to calculate.) Fill in the missing part of this equation. m cm 0.080 · =? s s 14. Add or subtract the following measurements. Be sure each answer you enter contains the correct number of significant digits. 10.80 mL − 5.977 mL = mL 11.8 mL + 18.90 mL = mL 10.50 mL + 3.9 mL = mL Worksheet #2 Page 5 / 6 Copyright © 2024 McGraw Hill - ALEKS® is a registered trademark of ALEKS Corporation  15. The metal vanadium becomes superconducting at temperatures below 5.38 K. Calculate the temperature at which vanadium becomes superconducting in degrees Celsius. Be sure your answer has the correct number of significant digits. 16. Decide whether each proposed addition or subtraction of measurements is possible. If it is possible, write the result in the last column of the table. Be sure every answer you enter has the correct unit symbol. proposed Is this result addition or subtraction possible? 53.0 g − 25.0 g = ? yes no 11.000 kg = ? yes 17.000 L + no yes 57.000 kg − 27.000 g = ? no Worksheet #2 Page 6 / 6 Copyright © 2024 McGraw Hill - ALEKS® is a registered trademark of ALEKS Corporation