02-clicker-questions.pptx

PowerPoint® Clicker Questions prepared by Bradley W. Christian, McLennan Community College CHAPTER 2 Chemical Principles © 2016 Pearson Education, Ltd. What is the smallest component of a substance that CANNOT be divided into smaller substances without losing its properties? a) b) c) d) nucleus mole...

PowerPoint® Clicker Questions prepared by Bradley W. Christian, McLennan Community College CHAPTER 2 Chemical Principles © 2016 Pearson Education, Ltd. What is the smallest component of a substance that CANNOT be divided into smaller substances without losing its properties? a) b) c) d) nucleus molecule atom element © 2016 Pearson Education, Ltd. What is the smallest component of a substance that CANNOT be divided into smaller substances without losing its properties? a) b) c) d) nucleus molecule atom element © 2016 Pearson Education, Ltd. The nucleus contains a) b) c) d) electrons and protons. protons and neutrons. protons and electrons. electrons and neutrons. © 2016 Pearson Education, Ltd. The nucleus contains a) b) c) d) electrons and protons. protons and neutrons. protons and electrons. electrons and neutrons. © 2016 Pearson Education, Ltd. Atoms with different numbers of neutrons in their nuclei are called a) b) c) d) molecules. elements. isotopes. compounds. © 2016 Pearson Education, Ltd. Atoms with different numbers of neutrons in their nuclei are called a) b) c) d) molecules. elements. isotopes. compounds. © 2016 Pearson Education, Ltd. How many electrons can be held in the second shell? a) b) c) d) 2 6 8 18 © 2016 Pearson Education, Ltd. How many electrons can be held in the second shell? a) b) c) d) 2 6 8 18 © 2016 Pearson Education, Ltd. An isotope of oxygen has an atomic number of 8 and an atomic weight of 18. How many neutrons does it have? a) b) c) d) 18 10 8 7 © 2016 Pearson Education, Ltd. An isotope of oxygen has an atomic number of 8 and an atomic weight of 18. How many neutrons does it have? a) b) c) d) 18 10 8 7 © 2016 Pearson Education, Ltd. Which type of bond is weak and does NOT bind atoms into molecules? a) b) c) d) hydrogen bond ionic bond covalent bond valence bond © 2016 Pearson Education, Ltd. Which type of bond is weak and does NOT bind atoms into molecules? a) b) c) d) hydrogen bond ionic bond covalent bond valence bond © 2016 Pearson Education, Ltd. The number of extra or missing electrons in an atom's outermost electron shell is called the atom's a) b) c) d) atomic number. electronic configuration. valence. covalence. © 2016 Pearson Education, Ltd. The number of extra or missing electrons in an atom's outermost electron shell is called the atom's a) b) c) d) atomic number. electronic configuration. valence. covalence. © 2016 Pearson Education, Ltd. A bond formed from the attraction between ions of opposite charge is called a(n) a) b) c) d) ionic bond. covalent bond. peptide bond. hydrogen bond. © 2016 Pearson Education, Ltd. A bond formed from the attraction between ions of opposite charge is called a(n) a) b) c) d) ionic bond. covalent bond. peptide bond. hydrogen bond. © 2016 Pearson Education, Ltd. A molecule that contains at least two different kinds of atoms is called a(n) a) b) c) d) ion. compound. solvent. solute. © 2016 Pearson Education, Ltd. A molecule that contains at least two different kinds of atoms is called a(n) a) b) c) d) ion. compound. solvent. solute. © 2016 Pearson Education, Ltd. Which of the following is formed by the sharing of electrons? a) b) c) d) isotope ionic bond hydrogen bond covalent bond © 2016 Pearson Education, Ltd. Which of the following is formed by the sharing of electrons? a) b) c) d) isotope ionic bond hydrogen bond covalent bond © 2016 Pearson Education, Ltd. Water has an unequal distribution of charges and is called a(n) a) b) c) d) nonpolar molecule. polar molecule. hydrophobic molecule. organic molecule. © 2016 Pearson Education, Ltd. Water has an unequal distribution of charges and is called a(n) a) b) c) d) nonpolar molecule. polar molecule. hydrophobic molecule. organic molecule. © 2016 Pearson Education, Ltd. Which of the following does NOT correctly describe inorganic compounds? a) b) c) d) usually small structurally simple contain carbon include salts, acids, and bases © 2016 Pearson Education, Ltd. Which of the following does NOT correctly describe inorganic compounds? a) b) c) d) usually small structurally simple contain carbon include salts, acids, and bases © 2016 Pearson Education, Ltd. A compound that helps keep the pH from changing drastically is a) b) c) d) a buffer. an acid. water. a base. © 2016 Pearson Education, Ltd. A compound that helps keep the pH from changing drastically is a) b) c) d) a buffer. an acid. water. a base. © 2016 Pearson Education, Ltd. MOST microbes grow best at a pH from a) b) c) d) 4.0 to 6.0. 5.0 to 6.5. 6.5 to 8.5. 8.5 to 10.0. © 2016 Pearson Education, Ltd. MOST microbes grow best at a pH from a) b) c) d) 4.0 to 6.0. 5.0 to 6.5. 6.5 to 8.5. 8.5 to 10.0. © 2016 Pearson Education, Ltd. A substance that dissociates into H+ and Cl– in water is an example of a(n) a) b) c) d) buffer. base. acid. neutral solution. © 2016 Pearson Education, Ltd. A substance that dissociates into H+ and Cl– in water is an example of a(n) a) b) c) d) buffer. base. acid. neutral solution. © 2016 Pearson Education, Ltd. In a decomposition reaction, sucrose can be broken down into a) b) c) d) starch. two glucoses. glucose and galactose. glucose and fructose. © 2016 Pearson Education, Ltd. In a decomposition reaction, sucrose can be broken down into a) b) c) d) starch. two glucoses. glucose and galactose. glucose and fructose. © 2016 Pearson Education, Ltd. The following is an example of what type of reaction? AB + CD → AD + BC a) b) c) d) exchange reaction synthesis reaction decomposition reaction reversible reaction © 2016 Pearson Education, Ltd. The following is an example of what type of reaction? AB + CD → AD + BC a) b) c) d) exchange reaction synthesis reaction decomposition reaction reversible reaction © 2016 Pearson Education, Ltd. Endergonic reactions ALWAYS a) b) c) d) release more energy than they absorb. are reversible. absorb more energy than they release. break down molecules into smaller parts. © 2016 Pearson Education, Ltd. Endergonic reactions ALWAYS a) b) c) d) release more energy than they absorb. are reversible. absorb more energy than they release. break down molecules into smaller parts. © 2016 Pearson Education, Ltd. In a synthesis reaction, a) b) c) d) a larger molecule is broken down into smaller parts. old bonds are broken and new bonds are formed. neither the reactants nor end products are stable. atoms, ions, or molecules are combined to form a larger molecule. © 2016 Pearson Education, Ltd. In a synthesis reaction, a) b) c) d) a larger molecule is broken down into smaller parts. old bonds are broken and new bonds are formed. neither the reactants nor end products are stable. atoms, ions, or molecules are combined to form a larger molecule. © 2016 Pearson Education, Ltd. In a decomposition reaction, a) a larger molecule is broken down into smaller parts. b) old bonds are broken and new bonds are formed. c) neither the reactants nor end products are stable. d) atoms, ions, or molecules are combined to form a larger molecule. © 2016 Pearson Education, Ltd. In a decomposition reaction, a) a larger molecule is broken down into smaller parts. b) old bonds are broken and new bonds are formed. c) neither the reactants nor end products are stable. d) atoms, ions, or molecules are combined to form a larger molecule. © 2016 Pearson Education, Ltd. Which of the following are the "building blocks" of proteins? a) b) c) d) amino acids fatty acids monosaccharides nucleotides © 2016 Pearson Education, Ltd. Which of the following are the "building blocks" of proteins? a) b) c) d) amino acids fatty acids monosaccharides nucleotides © 2016 Pearson Education, Ltd. Which of the following are purines? a) b) c) d) adenine and guanine cytosine and uracil guanine and cytosine adenine and thymine © 2016 Pearson Education, Ltd. Which of the following are purines? a) b) c) d) adenine and guanine cytosine and uracil guanine and cytosine adenine and thymine © 2016 Pearson Education, Ltd. Which of the following nitrogenous bases is NOT found in an RNA molecule? a) b) c) d) adenine guanine thymine uracil © 2016 Pearson Education, Ltd. Which of the following nitrogenous bases is NOT found in an RNA molecule? a) b) c) d) adenine guanine thymine uracil © 2016 Pearson Education, Ltd. Why do saturated fats become solid more easily than unsaturated fats? a) The double bonds create kinks in the chain. b) The H atoms on either side of the double bond are on the same side. c) The H atoms on either side of the double bond are on opposite sides. d) They are straight chains and pack more tightly together. © 2016 Pearson Education, Ltd. Why do saturated fats become solid more easily than unsaturated fats? a) The double bonds create kinks in the chain. b) The H atoms on either side of the double bond are on the same side. c) The H atoms on either side of the double bond are on opposite sides. d) They are straight chains and pack more tightly together. © 2016 Pearson Education, Ltd. Glycogen, dextran, and cellulose are examples of a) b) c) d) monosaccharides. disaccharides. polysaccharides. polypeptides. © 2016 Pearson Education, Ltd. Glycogen, dextran, and cellulose are examples of a) b) c) d) monosaccharides. disaccharides. polysaccharides. polypeptides. © 2016 Pearson Education, Ltd. Which level of protein structure refers to the overall three-dimensional structure of a polypeptide chain? a) b) c) d) primary structure secondary structure tertiary structure quaternary structure © 2016 Pearson Education, Ltd. Which level of protein structure refers to the overall three-dimensional structure of a polypeptide chain? a) b) c) d) primary structure secondary structure tertiary structure quaternary structure © 2016 Pearson Education, Ltd.