Intro Chem Exam #2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | D) all of the above
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| show | E) none of the above
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| 3) What is the term for a direct change of state from a solid to a gas? A) vaporization B) sublimation C) deposition D) condensation E) none of the above | show 🗑
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| show | B) mixture
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| 5) Water in a swimming pool contains dissolved sodium chloride and many other salts. Which of the following describes water in a swimming pool? A) element B) heterogeneous mixture C) homogeneous mixture D) compound E) none of the above | show 🗑
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| show | A) homogeneous mixture
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| 7) Which of the following chemical elements corresponds to the symbol B? A) barium B) boron C) beryllium D) bismuth E) none of the above | show 🗑
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| 8) Which of the following chemical elements corresponds to the symbol Fe? A) fermium B) iron C) manganese D) fluorine E) none of the above | show 🗑
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| 9) Which of the following chemical symbols corresponds to manganese? A) Mg B) Ma C) Sn D) Mn E) none of the above | show 🗑
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| show | E) uranium
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| show | E) all of the above
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| show | C) Sb
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| show | E) Se
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| 14) Cyanocobalamin, C63H88CoN14O14P, is vitamin B12. What is the number of atoms in one molecule of vitamin B12? A) 181 B) 12 C) 179 D) 180 E) none of the above | show 🗑
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| 15) Ammonium sulfate, (NH4)2SO4, is in fertilizer and replenishes nitrogen to the soil. What is the number of atoms in the chemical formula of ammonium sulfate? A) 20 B) 14 C) 15 D) 13 E) none of the above | show 🗑
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| 16) Which of the following is an example of a physical property? A) melting point B) physical state C) crystalline form D) color E) all of the above | show 🗑
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| show | C) flammable with oxygen
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| show | D) all of the above
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| 19) Which of the following properties of ethyl alcohol is a chemical property? A) ethyl alcohol and formic acid produce rum flavor B) ethyl alcohol and sodium metal release a gas C) ethyl alcohol and sulfuric acid produce ethyl | show 🗑
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
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