This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Chemistry > Chemistry – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 12 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Chemical bonding occurs so that atoms can A) Lose electrons. B) Share electrons. C) Gain electrons. D) Obtain complete outermost energy levels. Show Answer Correct Answer: D) Obtain complete outermost energy levels. 2. This element is the backbone of all organic molecules ..... A) Oxygen. B) Carbon. C) Sodium Chloride. D) Hydrogen. Show Answer Correct Answer: B) Carbon. 3. Neutrons and protons make up the atom's ..... A) Solution. B) Solvent. C) Electrons. D) Nucleus. Show Answer Correct Answer: D) Nucleus. 4. Discovered the nucleus of the atom through the Gold Foil Experiment A) Rutherford. B) Dalton. C) Chadwick. D) Thomson. Show Answer Correct Answer: A) Rutherford. 5. What state of matter takes the entire shape of its container A) Plasma. B) Solid. C) Liquid. D) Gas. Show Answer Correct Answer: D) Gas. 6. An ..... reaction is when more energy is absorbed than is released. This energy can be in the form of light, heat, electricity, etc. A) Exergonic. B) Exothermic. C) Endothermic. D) Endergonic. Show Answer Correct Answer: D) Endergonic. 7. Theories are considered successful only if they A) Can be used to make accurate predictions. B) Can be stated in simple terms. C) Can be written in the form of an equation. D) Have been accepted by all scientists. Show Answer Correct Answer: A) Can be used to make accurate predictions. 8. How do you calculate mass number? A) Look at the atomic number. B) Add electrons and protons. C) Add protons and neutrons. D) Add neutrons and electrons. Show Answer Correct Answer: C) Add protons and neutrons. 9. One of several forms of a single element, which contains the same number of protons, but different numbers of neutrons A) Orbital. B) Nucleus. C) Isotope. D) Ion. Show Answer Correct Answer: C) Isotope. 10. Which is true about biomolecules? A) Biomolecules are non living molecules that contain carbon. B) Biomolecules are living molecules that contain carbon. C) Biomolecules are non living molecules that contain oxygen only. D) Biomolecules are living molecules that contain carbon only. Show Answer Correct Answer: B) Biomolecules are living molecules that contain carbon. 11. A + 2H2O $\rightarrow$ 2NaOH+ H2 How many grams of hydrogen are produced if 120 g of Na are available? A) 690 g. B) 45 g. C) 2.6 g. D) 5.27 g. Show Answer Correct Answer: D) 5.27 g. 12. An atom has 10 protons and a mass of 18. It has ..... neutrons A) 10. B) 28. C) 18. D) 8. Show Answer Correct Answer: D) 8. 13. Atoms in molecules share pairs of electrons when they make A) Hydrogen bonds. B) Polymers. C) Ionic bonds. D) Covalent bonds. Show Answer Correct Answer: D) Covalent bonds. 14. An object's weight is a measure of A) The force causing the object to move. B) The force with which it is attracted by gravity. C) The pressure exerted on a scale. D) The amount of material per unit volume. Show Answer Correct Answer: B) The force with which it is attracted by gravity. 15. What is the mole used for? A) To measure the amount of grams in a substance. B) To measure the amount of energy in a substance. C) To measure the amount of atoms or molecules in a substance. D) To measure the amount of bonding in a substance. Show Answer Correct Answer: C) To measure the amount of atoms or molecules in a substance. 16. What is the correct name of SO2? A) Monosulfur dioxide. B) Sulfur dioxide. C) Disulfur dioxide. D) Disulfur oxide. Show Answer Correct Answer: B) Sulfur dioxide. 17. Neutrons and protons are found in the A) Electron clound. B) Energy levels. C) Nucleus. D) None of above. Show Answer Correct Answer: C) Nucleus. 18. Which set of symbols represents atoms with valence electrons in the same electron shell or energy level? A) O, S, Te. B) Mn, Hg, Cu. C) Sr, Sn, I. D) Ba, Br, Bi. Show Answer Correct Answer: C) Sr, Sn, I. 19. Chemistry is (technically) the study of ..... A) Chemical solutions and solids. B) Matter and the changes it undergoes. C) The world around us. D) Chemical reactions. Show Answer Correct Answer: B) Matter and the changes it undergoes. 20. You should tie back long hair or baggy clothing A) Any time you are working in the lab. B) When doing dissections. C) When working with chemicals. D) When working with a Bunsen burner. Show Answer Correct Answer: A) Any time you are working in the lab. 21. Which one of the following sets of pH values is correct? A) Acid 6, neutral 8, alkaline 10. B) Acid 7, neutral 8, alkaline 9. C) Acid 1, neutral 3, alkaline 5. D) Acid 5, neutral 7, alkaline 9. Show Answer Correct Answer: D) Acid 5, neutral 7, alkaline 9. 22. Which set is in order from weakest to strongest intermolecular attractions A) Chlorine, bromine, iodine. B) Iodine, chlorine, bromine. C) Iodine, chlorine, bromine. D) Bromine, iodine, chlorine. Show Answer Correct Answer: A) Chlorine, bromine, iodine. 23. What is the chemical formula for ammonia? A) NH3. B) NH5. C) NH6. D) NH4. Show Answer Correct Answer: A) NH3. 24. Elements foundon the lower left side of the Periodic Table are classified as A) Metals. B) Nonmetals. C) Metalloids. D) Noble gases. Show Answer Correct Answer: A) Metals. 25. The following are the physical properties of matter EXCEPT A) Flammability. B) Density. C) Color. D) Melting Point. Show Answer Correct Answer: A) Flammability. 26. The bond where electrons are donated between a metal and a non-metal. A) Molecule. B) Hydrogen. C) Ionic. D) Covalent. Show Answer Correct Answer: C) Ionic. 27. What parts of an atom have mass? A) Protons only. B) Neutrons only. C) Electrons only. D) Protons and Neutrons. Show Answer Correct Answer: D) Protons and Neutrons. 28. What type of charge does an electron have? A) Positive. B) Negative. C) Neutral. D) None of above. Show Answer Correct Answer: B) Negative. 29. In the nucleus of an atom ..... is present A) Proton. B) Neutron. C) Electron. D) Proton and neutron. Show Answer Correct Answer: D) Proton and neutron. 30. The inert gases are ..... in water A) Soluble. B) Insoluble. C) Sparingly soluble. D) None of these. Show Answer Correct Answer: C) Sparingly soluble. 31. What is the rate of reaction? A) How big a reaction is. B) How fast a reaction is. C) How loud a reaction is. D) How much gas a reaction produces. Show Answer Correct Answer: B) How fast a reaction is. 32. Forming a chemical bond ..... A) Absorbs energy from the surroundings. B) Creates energy that did not previously exist. C) Uses up energy that then no longer exists. D) Releases energy into the surroundings. Show Answer Correct Answer: D) Releases energy into the surroundings. 33. If an element in nature that does not naturally exist as an individual atom it is called ..... A) Homonuclear Diotomics. B) Homosapien. C) Monemers. D) Combustible. Show Answer Correct Answer: A) Homonuclear Diotomics. 34. A solution with a pH of 7 is ..... A) Neutral. B) Apple juice. C) Decreasing. D) Increasing. Show Answer Correct Answer: A) Neutral. 35. The energy of a moving object is A) Heat energy. B) Mechanical energy. C) Radiant energy. D) Nuclear energy. Show Answer Correct Answer: B) Mechanical energy. 36. The SI base units for time and temperature are A) Hour and degree Celsius. B) Second and degree Celsius. C) Hour and kelvin. D) Second and kelvin. Show Answer Correct Answer: D) Second and kelvin. 37. Which scientist described an atom made of a solid positively charged substance with electrons dispersed throughout it? A) Chadwick. B) Bohr. C) Rutherford. D) Thomson. Show Answer Correct Answer: D) Thomson. 38. What is the molar mass of AuCl3? A) 96.00 g/mol. B) 303.32 g/mol. C) 232.51 g/mol. D) 130.00 g/mol. Show Answer Correct Answer: B) 303.32 g/mol. 39. What can you do to cake batter to cause a chemical change? A) Mix it. B) Cool it. C) Heat it. D) Freeze it. Show Answer Correct Answer: C) Heat it. 40. How many electrons are there in one orbital? A) 2 elecctrons. B) 8 electrons. C) 6 electrons. D) 4 electrons. Show Answer Correct Answer: A) 2 elecctrons. 41. At room temperature, the solubility of which solute in water would be most affected by a change in pressure? A) Carbon dioxide (g). B) Methanol (l). C) Sodium nitrate (s). D) Sugar (s). Show Answer Correct Answer: A) Carbon dioxide (g). 42. Carbon has an atomic number of 6. The number of electrons found in the first shell is A) 6. B) 8. C) 4. D) 2. Show Answer Correct Answer: D) 2. 43. How many moles are there in 24.0 grams of FeF3? A) .213 moles. B) .684 moles. C) 12.6 moles. D) 4.70 moles. Show Answer Correct Answer: A) .213 moles. 44. Which two sub-atomic particles are located in the nucleus of an atom? A) Proton and Neutron. B) Proton and Electron. C) Electron and Neutron. D) None of above. Show Answer Correct Answer: A) Proton and Neutron. 45. In the CHNOPS abbreviation, what does the N stand for? A) Nickel. B) Neon. C) Nitrogen. D) Nitrous Oxide. Show Answer Correct Answer: C) Nitrogen. 46. Which two subatomic particles are found in the nucleus of an atom A) Protons and electrons. B) Protons & neutrons. C) Neutrons & electrons. D) None of above. Show Answer Correct Answer: B) Protons & neutrons. 47. What kind of bonds equally share electrons? A) Hydrogen. B) Ionic. C) Polar-covalent. D) Covalent. Show Answer Correct Answer: D) Covalent. 48. Acids react with A) Water to produce bases and salts. B) Salts to produce bases and water. C) Neither bases, salt nor water. D) Bases to produce salt and water. Show Answer Correct Answer: D) Bases to produce salt and water. 49. ..... are found inside the nucleus of an atom. A) Protons only. B) Protons and neutrons. C) Protons, neutrons, electrons. D) Electrons only. Show Answer Correct Answer: B) Protons and neutrons. 50. Which is used in preparation of dynamite? A) Glycol. B) Methyl alcohol. C) Glycerol. D) Ethyl alcohol. Show Answer Correct Answer: C) Glycerol. 51. Which of the following is a compound? A) Aluminum. B) Chlorine. C) Oxygen. D) Water. Show Answer Correct Answer: D) Water. 52. If too much carbon dioxide accumulates in cells and tissues A) The pH will increase. B) The pH will decrease. C) Cell membranes will rupture. D) Cell membranes will shrivel. Show Answer Correct Answer: B) The pH will decrease. 53. The total number of proton and neutron tells the ..... of an atom A) Electron configuration. B) Atomic mass. C) Isotope. D) Atomic number. Show Answer Correct Answer: B) Atomic mass. 54. If an atom has 35 protons in the nucleus, how many electrons will it have orbiting outside the nucleus. A) 35. B) 25. C) 5. D) None of above. Show Answer Correct Answer: A) 35. 55. A type of matter with uniform composition and properties is A) Plasma. B) Matter. C) Mixture. D) A substance. Show Answer Correct Answer: D) A substance. 56. Which of the following is the smallest in size? A) K. B) Li. C) Na. D) Cs. Show Answer Correct Answer: B) Li. 57. What is the general formula for saturated hydrocarbons? A) CnH2n+1. B) CnHn+1. C) CnH2n+2. D) CnH2n. Show Answer Correct Answer: C) CnH2n+2. 58. The heat energy produced when the human body metabolises 1 gram of fat is A) 1 KJ. B) 30 KJ. C) 29 KJ. D) 39 KJ. Show Answer Correct Answer: D) 39 KJ. 59. A solution containing solute that is more than what the given solvent can dissolve A) Unsaturated solution. B) Supersaturated solution. C) Solution. D) Saturated solution. Show Answer Correct Answer: B) Supersaturated solution. 60. Due to rusting the weight of iron A) Increases. B) Decreases. C) Remains the same. D) Uncertain. Show Answer Correct Answer: A) Increases. ← PreviousNext →Related QuizzesScience QuizzesGeneral Knowledge QuizzesChemistry Quiz 1Chemistry Quiz 2Chemistry Quiz 3Chemistry Quiz 4Chemistry Quiz 5Chemistry Quiz 6Chemistry Quiz 7Chemistry Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books