This is a guide for your test #1.

Transcription

1 This is a guide for your test #1. 1) Lead melts at C. What temperature is this in F? A. 302 F B. 365 F C. 1,050 F D. 1,082 F E. 1,114 F 2) Ammonia boils at C. What temperature is this in F? A F B F C F D F E F 3. The highest temperature ever recorded in Phoenix, Arizona, was 122 F. Express this temperature in C. A C B C C C D C E C 5. The number has how many significant figures? A. 2 B. 3 C. 4 D. 9 E How many significant figures does the sum contain? D. 4 E How many significant figures does the difference contain? D. 5 E Do the indicated arithmetic and give the answer to the correct number of significant figures. ( ) = A C D E

2 10. When 7.02 C is converted to the Fahrenheit scale, how many significant figures are there in the F result? D. 4 E A piece of metal with a mass of 114 g was placed into a graduated cylinder that contained ml of water, raising the water level to ml. What is the density of the metal? A g/cm 3 B g/cm 3 C g/cm 3 D g/cm 3 E g/cm Given the following densities at 25 o C: magnesium: 1.7 g/cm 3 graphite: 1.8 g/cm 3 iron: 7.9 g/cm 3 A block of iron has a mass of 826 g. What is the mass of a block of magnesium that has the same volume as the block of iron?,400 g B. 3,800 g C. 830 g D. 180 g E. 90 g 13. The density of lead is 11.4 g/cm 3 at 25 C. Calculate the volume occupied by 25.0 g of lead. A cm 3 B cm 3 C. 285 cm 3 D cm 3 E cm Bromine is a red liquid at 25 C. Its density is 3.12 g/cm 3. What is the volume of 28.1 g of liquid bromine? A cm 3 B cm 3 C cm 3 D cm 3 E. 111 cm The density of mercury is 13.6 g/cm 3. How many liters does 251 g of Hg occupy? 8.5 L B L C L D L E L 16. An atom of the isotope sulfur-31 consists of how many protons, neutrons, and electrons? (p = proton, n = neutron, e = electron) 5 p, 16 n, 15 e B. 16 p, 15 n, 16 e C. 16 p, 31 n, 16 e D. 32 p, 31 n, 32 e E. 16 p, 16 n, 15 e 17. Give the number of protons (p), electrons (e), and neutrons (n) in one atom of chlorine-37.

3 A. 37 p, 37 e, 17 n B. 17 p, 17 e, 37 n C. 17 p, 17 e, 20 n D. 37 p, 17 e, 20 n E. 17 p, 37 e, 17 n 18. An aluminum ion, Al 3+, has: 3 protons and 13 electrons 7 protons and 24 electrons C. 16 protons and 13 electrons D. 13 protons and 10 electrons E. 10 protons and 13 electrons 19. A sulfide ion, S 2-, has: 6 protons and 16 electrons B. 32 protons and 16 electrons C. 16 protons and 14 electrons D. 16 protons and 18 electrons E. 32 protons and 18 electrons 21. The formula for sodium sulfide is A. NaS. B. K 2S. C. NaS 2. D. Na 2S. E. SeS. 22. The correct name for NH 4NO 3 is A. ammonium nitrate. B. ammonium nitrogen trioxide. C. ammonia nitrogen oxide. D. hydrogen nitrogen oxide. E. hydrogen nitrate. 23. The correct name for Ba(OH) 2 is A. barium hydrogen oxide. B. boron hydroxide. C. barium hydrate. D. beryllium hydroxide. E. barium hydroxide. 24. The Stock system name for As 2S 5 is A. arsenic(v) sulfide. B. diarsenic pentasulfide. C. arsenic(iii) sulfide. D. arsenic(v) sulfate. E. diarsenic sulfate. 25. Consistent with vanadium being a transition metal, the name for VSO 4 should be A. vanadium sulfide. B. vanadium (I) sulfite. C. vanadium (I) sulfate. D. vanadium (II) sulfate. E. vanadium sulfur tetraoxide. 26. The chemical formula for iron(ii) nitrate is

4 A. Fe 2(NO 3) 3. B. Ir(NO 2) 2. C. Fe 2N 3. D. Fe(NO 3) 2. E. Fe(NO 2) The Stock system name for CrO 3 is A. chromium oxide. B. chromium(ii) oxide. C. chromium(iii) trioxide. D. chromium(iii) oxide. E. chromium(vi) oxide. 28. The Stock system name for Cr 2O 3 is A. chromium(iii) oxide. B. dichromium trioxide. C. chromium(vi) oxide. D. chromium trioxide. E. chromium(ii) oxide. 29. What is the molar mass of acetaminophen, C 8H 9NO 2? A. 43 g/mol B. 76 g/mol C. 151 g/mol D. 162 g/mol E. 125 g/mol 31. How many moles of O atoms are in 25.7 g of CaSO 4? A mol B mol C mol D mol E mol 32. What is the coefficient of H 2O when the following equation is properly balanced with the smallest set of whole numbers? Na + H 2O NaOH + H 2 D. 4 E When a chemical equation is balanced, it will have a set of whole number coefficients that cannot be reduced to smaller whole numbers. What is the coefficient for O 2 when the following combustion reaction of a hydrocarbon is balanced? C 7H 14 + O 2 CO 2 + H 2O A C. 11 D. 10 E. none of these 34. What is the coefficient of H 2SO 4 when the following equation is properly balanced with the smallest set of whole numbers. Ca 3(PO 4) 2 + H 2SO 4 CaSO 4 + H 3PO 4

5 A. 3 B. 8 C. 10 D. 11 E. none of these 35) Which of the following compounds would you expect to be ionic? A) SF 6 B) H 2O C) CO 2 D) NH 3 E) CaO 1) Which of the following compounds would you expect to be ionic? A) H 2O B) CO 2 C) SrCl 2 D) SO 2 E) H 2S 2) Which pair of elements is most likely to form an ionic compound with each other? A) barium, Chlorine B) calcium, sodium C) oxygen, fluorine D) sulfur, carbon E) nitrogen, hydrogen 3) Of the choices below, which one is not an ionic compound? A) PCl 5 B) CrCl 6 C) RbCl D) PbCl 2 E) NaCl 4) What is the formula of the compound formed between strontium ions and nitrogen ions? A) SrN B) Sr 3N 2 C) Sr 2N 3 D) SrN 2 E) SrN 3 25) Magnesium reacts with a certain element to form a compound with the general formula MgX. What would the most likely formula be for the compound formed between Lithium and element X? A) Li 2X B) LiX 2 C) Li 2X 3 D) Li 2X 2 E) LiX 26) Which one of the following compounds is chromium(iii) oxide? A) Cr 2O 3 B) CrO 3 C) Cr 3O 2 D) Cr 3O E) Cr 2O 4

6 27) Which one of the following compounds is copper(i) chloride? A) CuCl B) CuCl 2 C) Cu 2Cl D) Cu 2Cl 3 E) Cu 3Cl 2 28) The correct name for MgF 2 is. A) manganese difluoride B) magnesium difluoride C) monomagnesium difluoride D) manganese bifluoride E) magnesium fluoride 29) Which metal is capable of forming more than one cation? A) Li B) Ba C) Sr D) Al E) Sn 30) The correct name for Cu(CN) 2 is. A) Copper (I) cyanide B) Carbon cyanide C) Carbon carbonate D) Copper (II) cyanide E) Copper (I) nitride 100 milliliters of water has a mass of 100 grams. If you measured the mass of 50 milliliters of water, the mass would be a) 25 grams b) 200 grams c) 100 grams d) 50 grams