CHEMISTRY 110 EXAM 2: CHAPTERS 3 AND 4 PART 1

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1 Last Name CHEM 110 FORM A Professor BEAMER First Name Which lab section are you in? (Circle One) M W R CHEMISTRY 110 EXAM 2: CHAPTERS 3 AND 4 PART 1 GENERAL INFORMATION No calculators are allowed for this part of Exam 2. No periodic tables (blank or otherwise) are allowed for Part 1 of Exam 2. Suggested time allotment: 45 min to 60 min (MAX TIME) I suggest that you do Exam Practice Review 8 (Waves) before starting Part 1 of this Exam. Questions 1 4: Memorized Metric Conversion Factors EX) Write the conversion factor between decajoules and joules: 10 J = 1 daj 1) Write the conversion factor between kilometers and meters (use symbols): 2) Write the conversion factor between milliseconds and seconds (use symbols): 3) Write the conversion factor between meters and centimeters (use symbols): 4) Write the value for the density of water. Units must be included. Questions 5 8: Memorized Metric Prefixes Each blank is worth 1 pt each See example as a guide Metric Prefix (name) Metric Prefix (symbol) Exponent Example) exa E Question 5) mega Question 6) n Question 7) 10 9 Question 8) micro Page 1 of 8

2 Questions 9 18: Write the name Questions 19 28: Write the chemical symbol Each name is worth 2 points. Each chemical symbol is worth 2 points. Every three spelling errors = 3% deduction Write capital and lower case letters clearly 9) Xe 19) francium 10) Ni 20) titanium 11) Hg 21) chromium 12) Cu 22) vanadium 13) Ra 23) iodine 14) Ag 24) boron 15) Ne 25) potassium 16) Na 26) silicon 17) S 27) chlorine 18) N 28) hydrogen Page 2 of 8

3 Questions Name the shaded regions appropriately 29) 30) 31) Page 3 of 8

4 32) Rewrite the following types of radiation in order of increasing (shortest to longest) wavelength. microwaves red light ultraviolet light (UV) radio waves green light 33) The electron configuration for bismuth is written below. How many valence electrons does bismuth have? Bi: 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 2 4d 10 5p 6 6s 2 4f 14 5d 10 6p 3 34) Which model of the atom did Rutherford devise? (Name from class notes, not the textbook). 35) H2O(l) H2O(s) is an example of which phase change? 36) WOTF (Which of the following) is an NOT an example of a physical change? A) iodine crystals subliming onto a cold surface B) iron filings being attracted to a magnet C) silver reacting with sulfur D) sugar dissolving in water E) water vapor condensing onto a cool window 37) What state of matter is described below: The particles are close together. The particles cannot easily compressed. Its shape depends upon the shape of its container. Page 4 of 8

5 38) Give three examples of a chemical change. Diagram 39 (for Questions 39A, 39B, AND 39C) alpha particle source ( ) Au 39A) Who devised the experiment above (last name only is ok) 39B) Which model of the atom was disproved because of this experiment? 39C) Which model of the atom was proposed because of this experiment? 39D) On the diagram above, draw what happened when the alpha particle source was turned on. (Draw the path of the alpha particles.) Page 5 of 8

6 Questions 40 through 45 are True/False questions. If the statement is true, write a T in the first answer box. Leave the second box empty. If the statement is false: Example Write an F in the answer box CHEM 110 FORM A In the second box, write a word or phrase to replace the italicized/underlined word to make the statement true. F EX) The term for water in its solid form is steam. ice 41) Isotopes have the same number of protons, but differ in the number of neutrons. 42) The symbol for mass number is Z. 43) Alloys are examples of heterogeneous mixtures. 44) Compounds cannot be broken down into simpler substances through chemical reactions. 45) In the process of sublimation, heat is added to the substance. Page 6 of 8

7 46) WOTF (Which of the following) is the correct AXE Notation for trigonal pyramidal? A) AX B) AX2E C) AX2E2 D) AX3 E) AX3E Diagram 47 (for Questions 47A and 47B) Line A Line B Line C Line D 47A) WOTF (Which of the following) represents 1 wavelength in Diagram 47? A) Line A B) Line B C) Line C D) Line D E) NOTA (none of the above) 47B) Write the value for the wave s frequency. Hint: It is not always a whole number. Page 7 of 8

8 Question 48) The UNKNOWN contains two of the four elements (A through D). Circle the two elements that are likely to be present in the UNKNOWN. Explain your answer in two sentences or less. Hint: cross out the elements that can t be in the unknown CHEM 110 FORM A UNKNOWN ELEMENT A ELEMENT B ELEMENT C ELEMENT D YOU ARE FINISHED WITH PART 1 OF THE EXAM. TURN IN PART 1. THE INSTRUCTOR WILL GIVE YOU PART 2 OF THE EXAM. Page 8 of 8