Practice chem exam

Practice chem exam - 1) A dilute sugar solution is an...

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1) A dilute sugar solution is an example of a ____________. 1) _________ a) homogeneous mixture b)element c)heterogenous mixture d) compound 2) The term used to describe the conversion from a gaseous state to a liquid state is ____________. 2) _________ a) condensation b) sublimation c) melting d) evaporation 3) Which value below properly expresses the number 0.0247 in scientific notation? 3) _________ a) 2.47 x 10 -1 b) 2.47 x 10 -2 c) 2.47 x 10 -4 c) 24.7 4) What is the density of a piece of wood that weighs 62 grams and displaces 0.525L of water? 4) _________ a) 0.008 g/mL b) 120 g/mL c) 0.12 g/mL d) 8.47 g/mL 5) If the speed limit is 60 mi/hr, its equivalent in km/hr is __________? 5) _________ a) 97 b) 27 c) 38 d) 123 6) Which of the following is the correct symbolic representation of the lead-209 isotope? 6) _________ a) 127 82 Pb b) 209 82 Pb c) 209 82 Li d) 291 82 Pb 7) How many neutrons does the nucleus of the phosphorus-32 isotopes have? 7) _________ a) 15 b) 17 c) 32 d) 16 8) Which element, isotope, or ion listed below contains 16 protons,
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This note was uploaded on 12/13/2010 for the course CHEM 1 taught by Professor Duplessis during the Summer '10 term at Delgado CC.

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Practice chem exam - 1) A dilute sugar solution is an...

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