1A_2008_Spring_1_key - Chemistry 1A Spring 2008 Exam 1 Key...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Chemistry 1A Spring 2008 Exam 1 Key Chapters 1-4 Electronegativities H 2.2 Li Be B C N O F 0.98 1.57 2.04 2.55 3.04 3.44 3.98 Na Mg Al Si P S Cl 0.93 1.31 1.61 1.9 2.19 2.58 3.16 K Ca Ga Ge As Se Br 0.82 1.0 1.81 2.01 2.18 2.55 2.96 Rb Sr In Sn Sb Te I Xe 0.82 0.95 1.78 1.96 2.05 2.1 2.66 2.6 Cs Ba Tl Pb Bi Po 0.79 0.89 2.33 2.02 2.0 2.2 Substance Density in g/mL battery acid 1.29 benzene, C 6 H 6 0.879 blood (whole) 1.05 bromine, Br 2 3.12 chocolate 1.75 copper, Cu 8.94 chromium(III) oxide, Cr 2 O 3 5.2 gasoline 0.7025 gold, Au 19.0 Iron, Fe 7.87 magnesium, Mg 1.74 nitrobenzene, C 6 H 5 NO 2 1.20 oleic acid 0.895 phosphorus oxychloride, POCl 3 1.675 sulfuric acid (concentrated) 1.84 water at 20 ° C 0.997
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
2 Answer the following by writing the word, words, letter, letters or number in each blank that best completes each sentence. (1½ point each blank unless stated otherwise) 1. A(n) heterogeneous mixture is a mixture with two or more phases. 2. Nanoscale means on the order of the size of atoms. 3. Metalloids or semimetals are the elements that have some but not all of the characteristics of metals. 4. The accepted SI standard for amount of substance is the mole , which has an abbreviation of mol . 5. The accepted SI base unit for energy is the joule , which has an abbreviation of J . (2 points) 6. The elements in group 1 on the periodic table are called alkali metals . 7. The SI (metric) prefix associated with 10 12 is pico , which has an abbreviation of p . (2 points) 8. The common units associated with the density of gases are g/L . 9. The bond between a carbon atom and an oxygen atoms is polar covalent (nonpolar covalent, polar covalent, or ionic). 10. In the H-F polar covalent bond, the H is partial positive, and the F is partial negative. (2 points) 11. A(n) cation is an ion formed from an atom that has lost one or more electrons and thus has become positively charged.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 6

1A_2008_Spring_1_key - Chemistry 1A Spring 2008 Exam 1 Key...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online