This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Chemistry > Chemistry – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. According to the Arrhenius theory, which list of compounds includes only bases? A) KOH, Ca(OH)2, and H2CO3. B) KOH, Ca(OH)2, and LiOH. C) LiOH, Ca(OH)2, and C2H4(OH)2. D) NaOH, Ca(OH)2, and CH3COOH. Show Answer Correct Answer: B) KOH, Ca(OH)2, and LiOH. 2. The word for a substance that you react at the start of a chemical reaction ..... A) Reactant. B) Reaction. C) The result. D) Product. Show Answer Correct Answer: A) Reactant. 3. Which subatomic particles carry a charge? A) Protons and neutrons. B) Neutrons and electrons. C) Protons and electrons. D) Neutrons only. Show Answer Correct Answer: C) Protons and electrons. 4. The three types of mixtures are.. A) Concentrates, dilutes, dissolvers. B) Solutions, colloids, sediments. C) Solutions, solutes, solvents. D) Solutions, colloids, suspensions. Show Answer Correct Answer: D) Solutions, colloids, suspensions. 5. Polymers of polysaccharides, fats, and proteins are all synthesized from monomers by A) Connecting the monosaccharides together. B) Ionic bonding. C) The removal of water (dehydration synthesis). D) The addition of water to each monomer. Show Answer Correct Answer: C) The removal of water (dehydration synthesis). 6. What information do we look for on the periodic table if we want to examine intermolecular forces? A) Atomic number. B) Electronegativity. C) Atomic mass. D) Ionization. Show Answer Correct Answer: B) Electronegativity. 7. Which have the maximum density? A) Water. B) Benzene. C) Ice. D) Chloroform. Show Answer Correct Answer: A) Water. 8. Which one of the following is the most common element found in the body? A) Hydrogen. B) Nitrogen. C) Oxygen. D) Carbon. Show Answer Correct Answer: C) Oxygen. 9. Hydrogen bonding occurs when Hydrogen is bonded to N, O or F. Which of the following would have hydrogen bonding with water molecules? A) NH3. B) CBr4. C) NO2. D) H2S. Show Answer Correct Answer: A) NH3. 10. I take the heat away from a solid material and it becomes a liquid, what do we call the temperature at which this happens? A) Boiling point. B) Freezing point. C) Melting point. D) Condensation point. Show Answer Correct Answer: C) Melting point. 11. An atom with atomic number 6 would have how many protons A) Cannot be determined. B) 6. C) 3. D) 12. Show Answer Correct Answer: B) 6. 12. Alkali metals are extremely reactive because they A) Have very small atomic masses. B) Are not solid at room temp. C) Have one valence electron. D) Have 2 valence electrons. Show Answer Correct Answer: C) Have one valence electron. 13. What is the noble gas shorthand electron for Sulfur atom? A) [He] 3s23p4. B) [Ne] 3s23p4. C) [Na] 3s23p4. D) [Ar] 3p4. Show Answer Correct Answer: B) [Ne] 3s23p4. 14. The smallest unit of matter. A) Molecule. B) Compound. C) Element. D) Atom. Show Answer Correct Answer: D) Atom. 15. Proteins are composed of which molecules? A) Monosaccharides. B) Fatty acids. C) Amino acids. D) Nucleic acids. Show Answer Correct Answer: C) Amino acids. 16. Which statement is NOT true of organic molecules? A) DNA is the genetic code in chromosomes. B) Phospholipids are part of cell membranes. C) Hormones may be steroids or proteins. D) Oliogosaccharides are energy storage molecules. Show Answer Correct Answer: D) Oliogosaccharides are energy storage molecules. 17. A column on the periodic table A) Groups. B) Element. C) Periodic. D) Electron rings. Show Answer Correct Answer: A) Groups. 18. Building blocks of DNA or RNA A) Monosaccharides. B) Glycerol and fatty acids. C) Neucleotides. D) Amino acids. Show Answer Correct Answer: C) Neucleotides. 19. How many atoms are in 0.075 mol of titanium? A) 4.5 x 1022. B) 2.2 X 1024. C) 1.2 X 10-25. D) 6.4 x 102. Show Answer Correct Answer: A) 4.5 x 1022. 20. What are the methods of electron configuration? A) Electron Notation, Orbital diagram, and Half shell method. B) Electron shell, Sub-shell, and Orbital. C) S, p, and d sub-shells. D) None of above. Show Answer Correct Answer: A) Electron Notation, Orbital diagram, and Half shell method. 21. Which of the following best describes liquids? A) Liquids are mostly empty space. B) Liquids can be easily compressed. C) Liquid particles are very far apart from each other. D) Liquids have strong attractive forces acting between particles. Show Answer Correct Answer: D) Liquids have strong attractive forces acting between particles. 22. What would be considered the weakest base? A) 14. B) 11.6. C) 7.8. D) 8. Show Answer Correct Answer: C) 7.8. 23. Which of the following is an example of a heterogeneous mixture? A) Orange-colored sugar water. B) Chunky peanut butter. C) Tap water. D) Gold ring. Show Answer Correct Answer: B) Chunky peanut butter. 24. What kind of bonding unequally shares electrons? A) Polar-covalent bond. B) Ionic bond. C) Hydrogen bond. D) Covalent bond. Show Answer Correct Answer: A) Polar-covalent bond. 25. If an atom has 10 protons, 10 neutrons, and 10 electrons, what is the mass of the atom? A) 10. B) 20. C) 30. D) None of above. Show Answer Correct Answer: B) 20. 26. Which of the following is an example of physical property of matter? A) Odor. B) Oxidation. C) Heat of combustion. D) Acidity. Show Answer Correct Answer: C) Heat of combustion. 27. The tendency of a substance to resist burning A) Composition. B) Nonflammability. C) Thermal conductivity. D) None of above. Show Answer Correct Answer: B) Nonflammability. 28. A stoichiometric computation in which the mass of products is determined from the given mass of reactants A) Mass to mass calculation. B) Molecules to molecules calculation. C) Atoms to atoms calculation. D) Avogadro's # to Avogadro's # calculation. Show Answer Correct Answer: A) Mass to mass calculation. 29. A neutral particle found in the nucleus of an atom A) Neutron. B) Proton. C) Electron. D) None of above. Show Answer Correct Answer: A) Neutron. 30. Which element is organic chemistry centered around? A) Sulphur. B) Boron. C) Sodium. D) Carbon. Show Answer Correct Answer: D) Carbon. 31. Being able to hammer metal into a thin sheet is called A) Cation. B) Anion. C) Malleable. D) Ductile. Show Answer Correct Answer: C) Malleable. 32. Bases turn litmus paper A) Blue. B) Green. C) Red. D) Orange. Show Answer Correct Answer: A) Blue. 33. The atoms of the same element which contains the same number of protons but different number of neutrons is known as ..... A) Isobar. B) Isotone. C) Isocore. D) Isotope. Show Answer Correct Answer: D) Isotope. 34. What is the atomic number? A) The number of protons. B) The number of protons and neutrons. C) The number of neutrons. D) The number of protons and electrons. Show Answer Correct Answer: A) The number of protons. 35. Building blocks of lipids A) Monosaccharides. B) Glycerol and fatty acids. C) Neucleotides. D) Amino acids. Show Answer Correct Answer: B) Glycerol and fatty acids. 36. KNO3 $\rightarrow$ KNO2 + O2What coefficients are needed to balance the reaction? A) 2, 2, 1. B) 2, 3, 2. C) 1, 3, 1. D) 1, 2, 2. Show Answer Correct Answer: A) 2, 2, 1. 37. How many valence electrons are present in Carbon? A) 6. B) 4. C) 3. D) 8. Show Answer Correct Answer: B) 4. 38. When atoms combine, they may gain, lose, or share A) Nuclei. B) Electrons. C) Neutrons. D) Protons. Show Answer Correct Answer: B) Electrons. 39. The identity of an element can be determined on the basis of which of the following? A) The number of electrons. B) The number of protons. C) The number of neutrons. D) The mass number. Show Answer Correct Answer: B) The number of protons. 40. What is the family name for group 18? A) Noble Gases. B) Chalogens. C) Halogens. D) Transition Metals. Show Answer Correct Answer: A) Noble Gases. 41. What determines the identity of an atom? A) The nucleus. B) The number of electrons. C) The number of neutrons. D) The number of protons. Show Answer Correct Answer: D) The number of protons. 42. Which area of chemistry deals with muscles and digestion? A) Biochemistry. B) Inorganic. C) Organic. D) Analytical. Show Answer Correct Answer: A) Biochemistry. 43. The atomic number of carbon is 6. How many unpaired electrons are in its outer shell? A) 5. B) 6. C) 4. D) 2. Show Answer Correct Answer: C) 4. 44. Acids have a pH of ..... A) 8-14. B) 7. C) 1-6. D) 0. Show Answer Correct Answer: C) 1-6. 45. Which of the primary component of natural gas? A) Butane. B) Propane. C) Ethane. D) Methane. Show Answer Correct Answer: D) Methane. 46. The electrons involved in bonding are A) Found closest to the nucleus. B) Found in the nucleus. C) In the highest occupied energy level(s). D) None of the choices. Show Answer Correct Answer: C) In the highest occupied energy level(s). 47. The center of an atom is called A) Electron cloud. B) Energy level. C) Valence. D) Nucleus. Show Answer Correct Answer: D) Nucleus. 48. Why is it important to study chemistry? A) Explain the natural world. B) Prepare for a career. C) Be an informed citizen. D) All three options. Show Answer Correct Answer: D) All three options. 49. Which biomolecule is also known as enzymes? A) Nucleic Acid. B) Lipid. C) Protein. D) Carbohydrate. Show Answer Correct Answer: C) Protein. 50. Using their properties mixtures can be separated too. When iron and wooden match mixed and you wish to separate them, how would it be possible? A) Use magnet to attract the iron. B) Dissolve them in water. C) Place them in water. D) Get their densities. Show Answer Correct Answer: A) Use magnet to attract the iron. 51. What is the mass of 6.25 mol of Cu(NO3)2? A) 625 g. B) 785 g. C) 126 g. D) 1172 g. Show Answer Correct Answer: D) 1172 g. 52. The elements argon, krypton, and xenon are all non-metals. What property would these elements have in common? A) Good conductor of thermal energy. B) Poor conductor of electricity. C) Shiny, lustrous surface. D) Soft and malleable. Show Answer Correct Answer: B) Poor conductor of electricity. 53. What is the maximum capacity of electrons located in the 3rd main energy level? A) 2 electrons. B) 32 electrons. C) 18 electrons. D) 8 electrons. Show Answer Correct Answer: C) 18 electrons. 54. What are the products from the following reactants:C3H8 + O2? A) Carbon Dioxide + Oxygen. B) Water and Oxygen. C) Carbon monoxide and water. D) Carbon dioxide and water. Show Answer Correct Answer: D) Carbon dioxide and water. 55. Atoms of the same element with a different number of neutrons A) Ion. B) Isotope. C) Gluons. D) Quarks. Show Answer Correct Answer: B) Isotope. 56. The energy stored in the mass of nuclei is A) Nuclear energy. B) Chemical energy. C) Heat energy. D) Radiant energy. Show Answer Correct Answer: A) Nuclear energy. 57. The nucleus of a hydrogen atom consists of A) 1 proton only. B) 1 neutron only. C) 1 proton + 2 neutron. D) 1 electron only. Show Answer Correct Answer: A) 1 proton only. 58. Compounds are made from the atoms of two or more ..... A) Solutions. B) Mixtures. C) Elements. D) Carbs. Show Answer Correct Answer: C) Elements. 59. Which of the following is an ionic bond? A) H3N. B) NO2. C) CaCl2. D) SCl. Show Answer Correct Answer: C) CaCl2. 60. It has at least two different phases of matter A) Homogeneous mixtures. B) Heterogeneous mixtures. C) Atom. D) Compound. Show Answer Correct Answer: B) Heterogeneous mixtures. ← PreviousNext →Related QuizzesScience QuizzesGeneral Knowledge QuizzesChemistry Quiz 1Chemistry Quiz 3Chemistry Quiz 4Chemistry Quiz 5Chemistry Quiz 6Chemistry Quiz 7Chemistry Quiz 8Chemistry Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books