CHEM 210 Exam 1 Study Questions with Correct Answers

CHEM 210 Exam 1 Study Questions with Correct Answers 1. The fundamental SI unit of mass is the - ANSWER kilogram 2. Chemistry Definition - ANSWER Matter, its properties, and its behavior. 3. Filtration - ANSWER Solid substances are separated from liquids and solutions. 4. Distillation - ANSWER Uses differences in boiling points of substances to separate a homogeneous mixture into its components. 5. What is an atomic orbital? - ANSWER A region of space where there is a high probability of finding an electron. 6. T/F according to the module, a compound with a molecular mass of 3,000 g/mol is considered a macromolecule - ANSWER false 7. Isotopes have the same ___ but different ___ - ANSWER atomic number, mass numbers 8. a collection of two or more macromolecules uniting is called a _______ A. supramolecular complex B. monomer C. macromolecular structure D. dimer E. Kekule' complex - ANSWER A. supramolecular complex 9. for propane, there are ______ carbon and ______ hydrogen atoms A. 5, 12 B. 4, 10 C. 3, 6 D. 3, 5 E. none of the above - ANSWER E. none of the above of the following would most likely have a cell wall? A. monkey cells B. snake cells C. red algae cells D. human red blood cells E. all of the above - ANSWER C. red algae cells 11.T/F according to the module, a compound with a molecular mass of 1,000 g/mol is considered a macromolecule - ANSWER false 12.T/F carbon dioxide has a linear molecular shape AND has a bond angle of 109.5 - ANSWER false molecule is the most important for energy storage in cells? A. creatine B. mitochondria C. DNA D. RNA E. ATP - ANSWER E. ATP would be the approximate size of a human cell? A. 12 um B. 1 nm C. 15 nm D. 0.2 inch E. 15 cm - ANSWER A. 12 um tists refer to ________ as the "super glue" of the chemistry A. C B. Co C. Na D. N E. O - ANSWER A. C energy molecule is produced via respiration? A. ATP B. Creatine C. DNA D. RNA E. mitochondria - ANSWER A. ATP would be the approximate size of a human cell? A. 0.1 inch B. 1 nm C. 10 nm D. 10 um E. 10 cm - ANSWER D. 10 um butane, there are ______ carbon and _____ hydrogen atoms A. 4, 8 B. 4, 10 C. 8, 4 D. 8, 10 E. both b and d - ANSWER B. 4,10 an organic compound, which structure is the most efficient to draw? A. condensed B. Kekule' C. line bond D. structural E. none of these - ANSWER C. line bond writing an organic functional group, scientists often write an "R" as part of the structure. what does the R indicate? A. argon B. rest of the molecule C. routine carbon atom D. a string of carbon atoms E. none of the above - ANSWER B. rest of the molecule many electrons can each orbital accomodate - ANSWER 2 are the 2 exceptions to the aufbau rule - ANSWER Cr, Cu do electrons enter orbitals - ANSWER enter one direction before pairing. 24.Chromatography - ANSWER Separates substances on basis of differences in solubility in a solvent. 25.Temperature - ANSWER Measure of average kinetic energy of the particles in a sample. 26.Accuracy - ANSWER Proximity of measurement to the true value of a quantity.