Chemistry Jeopardy

Chemistry Jeopardy

Atoms Water pH Organic Molecules Misc. 200 200 200 200 200 400 400 400 400 400 600 600 600 600 600 800 800 800 800 800 1000 1000 1000 1000 1000

200 Carbon has an atomic mass of 12 and an atomic number of 6. How many neutrons does it have? A) 6 B) 8 C) 7 D) 5 E) 2 A. 6

400 An ionic bond is one in which _____________. A) electrons are shared equally B) electrically neutral atoms have a mutual attraction C) two charged atoms have a mutual attraction due to electron transfer (donation) D) electrons are shared unequally C.

600 How do isotopes differ from each other? A) number of protons B) number of electrons C) number of neutrons D) valence electron distribution E) ability to form ions C. Number of Neutrons

800 The mass number of an element can be easily approximated by adding together the number of A) protons and neutrons B) electron orbitals in each energy level C) protons and electrons D) neutrons and electrons E) isotopes of the atom A. Protons and neutrons

1000 Nonpolar covalent bond, polar covalent bond, ionic bond, hydrogen bond 1) Results from a donation of electrons from one atom to another 2) Results from an unequal sharing of electrons between atoms 3) A weak bond that is seen mostly in water 4) Results from the equal sharing of electrons between atoms Ionic 2. Polar Covalent 3. Hydrogen 4. Non-Polar Covalent

200 Something that is hydrophobic A) will easily dissolve in water B) will easily form a bond with water C) will not dissolve in water D) both A and B are correct C. Will not dissolve in water

400 The partial charges on a water molecule occur because of _____. A) the unequal sharing of electrons between hydrogen and oxygen B) the achievement of a stable configuration by one atom of a bond but not by the other partner C) covalent bonding D) widespread ionization E) the high electronegativity of hydrogen A.

600 Water molecules have a polarity that allows them to bond to each other with loose bonds called A) hydrogen bonds B) ionic bonds C) acid bonds D) nonpolar bonds E) none of the above A. Hydrogen Bonds

800 Dehydration synthesis (or condensation synthesis) is the process in which ___________. A) water molecules are attracted to each other B) water molecules are used as a source of raw material to break down polymers to monomers C) water molecules are formed in the formation of polymers from monomers D) water molecules are attracted to each other and water molecules are formed in the formation of polymers from monomers D.

1000 What do cohesion, surface tension, and adhesion have in common with reference to water? A) All increase when temperature increases B) All are produced by ionic bonding C) All are properties related to hydrogen bonding D) All have to do with nonpolar covalent bonds E) C and D only C. Related to hydrogen bonding

200 Blueberries grow best in moderately acidic soil. What is the appropriate pH of a soil that is good for blueberries? A) 1.2 B) 4.8 C) 7.0 D) 8.3 E) 12.0 B. 4.8

400 The pH of blood Is strongly basic Is strongly acidic Varies with the needs of cells Is about 6.9 Is normally close to 7.4 E. Is normally close to 7.4

600 Select the statement that best describes a buffer. A) A buffer accepts hydrogen ions when they are in excess and donates hydrogen ions when they have been depleted. B) A buffer causes acidic solutions to become alkaline, and alkaline solutions to become acidic. C) A buffer prevents the pH of a solution from changing when an acid or base is added. D) A buffer stabilizes the pH of a solution by preventing acids or bases from dissociating. E) Buffered solutions are always neutral, with a pH of 7. C.

800 A chemist wishes to make an organic molecule less acidic. Which of the following functional groups should be added to the molecule in order to do so? A) Carboxyl B) Sulfhydryl C) Hydroxyl D) Amino E) Phosphate C. Hydroxyl

1000 Which statement is correct about pH? • There are no hydrogen ions in a strong basic solution. • Pure water has a neutral pH of 7 because the concentration of hydrogen ions equals the concentration of hydroxyl ions. • The concentration of a solution with a pH of 5 is 5 times more acidic than a solution of pH 1. • The concentration of hydrogen ions in a solution with a pH of 2 is 2,000 times more acidic than a solution with a pH of 4. • A solution with a pH of 5 means there are 5 X 10-1 moles of hydrogen ions in solution. B.

200 Which of these is not a function of lipids? A) long term energy storage B) structures in cells C) hormones D) enzymes E) sex hormones D. Enzymes

400 Which type of lipid is important in biological membranes? A) Fats B) Wax C) Phospholipids D) Oils E) Triglycerides C. Phospholipids

600 Carbohydrates normally function in animals as A) The functional units of lipids B) Enzymes in the regulation of metabolic processes C) A component of triglycerides D) Energy storage molecules E) Sites of protein synthesis D. Energy storage molecules

800 Which organic molecule is the exception for being a polymer? A) Nucleic acid B) Protein C) Carbohydrate D) Lipid D. Lipids

1000 The four main categories of macromolecules in a cell are A) proteins, DNA, RNA, and steroids B) monosaccharides, lipids, polysaccharides, and proteins C) proteins, nucleic acids, carbohydrates, and lipids D) nucleic acids, carbohydrates, monosaccharides, and proteins E) RNA, DNA, proteins, and carbohydrates. C.

200 Which of the following statements is NOT correct about enzymes? They raise the energy of activation of all reactions. They enable reactions to occur at a relatively low temperature. They remain unchanged during a reaction. They require coenzymes (vitamins) to work. They are often located within the plasma membrane of the cell. A.

400 Which of the following can be used to determine the rate of an enzyme-catalyzed reaction? The rate of substrate formed The decrease in temperature in the system The rate of enzyme formed The rate of enzyme used up The rate of substrate used up E. Substrated used up

600 A diet high in _____ is considered unhealthy, since this type of material is largely found in animal tissues. A) saturated fats B) testosterone C) unsaturated fats D) plant oils A. Saturated fats

800 Which of the following best describes the reaction shown below? A + B ---> AB + energy Hydrolysis An exergonic reaction An endothermic reaction Catabolism An endergonic reaction B. exergonic

1000 • What is the highest level of protein structure showing by molecule of hemoglobin? • Tertiary • Primary • Secondary • Quaternary D. Quaternary

Chemistry Jeopardy