Exam1KEY - Name Exam 1 Chemistry 112 October 7 2011 Part I...

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Name__________________________________________ Exam 1 Chemistry 112 October 7, 2011 Part I- Multiple Choice (3 points each). Please choose the single correct answer. 1. Which of the following prefixes is the largest? a) kilo b) nano c) micro d) milli 2. Which of the following is an example of a heterogeneous mixture? a) air b) tap water c) salt water d) mud puddle 3. You decide to run a 15-km road race. Your grandma wants to know how far this is in miles, with the correct number of significant figures. (1.000 km = 0.6214 miles) It is: a) 9 miles b) 9.3 miles c) 9.32 miles d) 9.321 miles 4. The element gallium has a melting point of 29.8 ° C. In what state will gallium be in your hand (37 ° C)? a) solid b) liquid c) gas d) solution 5. Which of the following has the highest energy? a) radiowaves b) microwaves c) red light d) blue light 6. Which of the following sets of elements has similar chemical properties? a) H, Li, Na b) H, He, Ne c) Co, Ni, Cu d) C, Si, Ge 7. Which observation below conflicts with Dalton’s proposal that atoms are indivisible? a) Burning a log results in a small pile of ashes. b) Water can be split into hydrogen and oxygen. c) Atoms are composed of protons, neutrons, and electrons. d) Food is broken down to release energy during metabolism. 8. Which of the following represents the correct formula of the compound formed by
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This note was uploaded on 03/31/2012 for the course CHEM 360 taught by Professor Millard during the Spring '12 term at Colby.

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Exam1KEY - Name Exam 1 Chemistry 112 October 7 2011 Part I...

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