This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Chemistry > Chemistry – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 7 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. If a dozen Clementine oranges have a mass of 744 g, what will be the mass of 15 Clementines? A) 896 g. B) 930 g. C) 595 g. D) 11.16 kg. Show Answer Correct Answer: B) 930 g. 2. PH stands for presence of A) Helium Peroxide. B) Hydrogen. C) Hydrogen Peroxide. D) Helium. Show Answer Correct Answer: B) Hydrogen. 3. Matter cannot be created or destroyed; this is the ..... A) Second Law of Thermodynamics. B) Law of Conservation of Mass. C) Law of Conservation of Energy. D) First Law of Thermodynamics. Show Answer Correct Answer: B) Law of Conservation of Mass. 4. Isotopes have different numbers of A) Neutrons. B) Properties. C) Protons. D) Electron. Show Answer Correct Answer: A) Neutrons. 5. What is the number of valence electrons for Oxygen? A) 1. B) 6. C) 8. D) 2. Show Answer Correct Answer: B) 6. 6. The CORRECT name of Al2O3 is ..... A) Dialuminum trioxide. B) Aluminum oxide. C) Aluminum hydroxide. D) Dialuminum oxide. Show Answer Correct Answer: B) Aluminum oxide. 7. Reactions that give out heat to the surrounding are classified as one of the following A) Spontaneous. B) Exothermic. C) Sluggish. D) None of above. Show Answer Correct Answer: B) Exothermic. 8. How many neutrons are in an atom of chlorine-35? A) 17. B) 35. C) 34. D) 18. Show Answer Correct Answer: D) 18. 9. Chemistry is the study of A) Matter. B) Matter interactions with energy. C) Changes of matter. D) All the above. Show Answer Correct Answer: D) All the above. 10. Cellulose and starch are carbohydrates that are found in ..... A) Plants. B) Animals. C) Bacteria. D) Llamas. Show Answer Correct Answer: A) Plants. 11. What is the name of the precipitate formed in the reaction of calcium sulfide and aluminum nitrate A) Aluminum nitrate. B) No ppt is formed. C) Calcium nitrate. D) Aluminum sulfide. Show Answer Correct Answer: D) Aluminum sulfide. 12. Which of the following is an example of a chemical property? A) Density. B) Color. C) Phase. D) Ability to rust. Show Answer Correct Answer: D) Ability to rust. 13. Which of the following type of intermolecular forces is the result of temporary uneven distribution of electrons around molecules that result in monetary dipoles? A) London dispersion forces. B) Dipole-dipole forces. C) Hydrogen bonding. D) Hydrogen bonding. Show Answer Correct Answer: A) London dispersion forces. 14. What are the basic building blocks for all matter? A) Atoms. B) Chemicals. C) Compounds. D) Elements. Show Answer Correct Answer: A) Atoms. 15. The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle? A) 3 billion years. B) 100 years. C) 13 days. D) 0.01 minute. Show Answer Correct Answer: D) 0.01 minute. 16. Ionic bonds form between metals and ..... A) Metalloids. B) Metals. C) Nonmetals. D) None of above. Show Answer Correct Answer: C) Nonmetals. 17. The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is A) X/6. B) 7.2 x. C) 5x/36. D) 5x. Show Answer Correct Answer: C) 5x/36. 18. In CHNOPS, what does the P stand for? A) Potassium. B) Polonium. C) Platinum. D) Phosphorus. Show Answer Correct Answer: D) Phosphorus. 19. A collection of atoms of one type that cannot be broken down into simpler substances by ordinary chemical or physical means A) Element. B) Subatomic particle. C) Electron. D) None of above. Show Answer Correct Answer: A) Element. 20. A chemical formula includes the symbols of the elements in the compound and the subscripts that indicates the A) Formula mass. B) Atomic mass of each element. C) Number of atoms or ions of each element. D) Charges of the elements or ions. Show Answer Correct Answer: C) Number of atoms or ions of each element. 21. What is the common name for NaCl? A) Water. B) Acid. C) Salt. D) Base. Show Answer Correct Answer: C) Salt. 22. Hydrocarbons will have which type of intermolecular forces? A) Dispersion. B) Dipole. C) Hydrogen bonds. D) None of above. Show Answer Correct Answer: A) Dispersion. 23. Butter, shortening, and all animal fats are examples of A) Saturated fats. B) Carbohydrates. C) Proteins. D) Unsaturated fats. Show Answer Correct Answer: A) Saturated fats. 24. What is the atomic number for the element Rh? A) 148. B) 44. C) 45. D) 103. Show Answer Correct Answer: C) 45. 25. Dissolved particles in a true solution A) Are visible to the eye. B) Cannot be removed by filtration. C) Are always liquids. D) Will settle when standing. Show Answer Correct Answer: B) Cannot be removed by filtration. 26. Which of the following is not a clue that a chemical change is taking place? A) Rapid release of energy (heat, light, or sound). B) Formation of bubbles. C) Formation of a precipitate from solution. D) Phase change. Show Answer Correct Answer: D) Phase change. 27. Which group of elements are located in the middle of elements A) Inner transition metals. B) Transition metals. C) Non-metals. D) Semi metals. Show Answer Correct Answer: B) Transition metals. 28. An atom is made up of which of the following subatomic particles A) Protons, neutrinos, electrons. B) Electrons, positrons, neutrinos. C) Protons, positrons, neutrons. D) Protons, neutrons, electrons. Show Answer Correct Answer: D) Protons, neutrons, electrons. 29. This group of macromolecules including fats, oils, waxes, and steroids. A) Proteins. B) Carbohydrates. C) Nucleic acids. D) Lipids. Show Answer Correct Answer: D) Lipids. 30. How are ionic bonds formed? A) When electrons are transferred. B) When atoms share an electron. C) When one atom takes a neutron. D) When one atom takes a proton. Show Answer Correct Answer: A) When electrons are transferred. 31. Which of the following lists contains a solid, liquid and a gas? A) K, Br, F. B) Li, Pb, O. C) Mg, Hg, S. D) Cu, Hg, Br. Show Answer Correct Answer: A) K, Br, F. 32. The pH Scale works in powers of ..... A) 10s. B) 1000s. C) 100s. D) 20s. Show Answer Correct Answer: A) 10s. 33. What does the ATOMIC MASS tell us about an atom? A) Protons + Neutrons. B) Protons + Electrons. C) Neutrons + Electrons. D) None of above. Show Answer Correct Answer: A) Protons + Neutrons. 34. Which is a carboxyl group? A) -COOH. B) C=O. C) -CO3. D) -OH. Show Answer Correct Answer: A) -COOH. 35. What is the percent composition of a compound that contains 40.8 g carbon and 54.4 g oxygen? A) 42.9 % carbon; 57.1% oxygen. B) 57.1 % carbon; 42.9 % oxygen. C) 54.4 % carbon; 40.8% oxygen. D) 40.8 % carbon; 54.4 % oxygen. Show Answer Correct Answer: A) 42.9 % carbon; 57.1% oxygen. 36. The lock-and-key model of enzyme function illustrates which important characteristic of enzymes? A) Ever-changing structure. B) Ability to bond with a product. C) Precise fit with a particular substrate. D) Ability to bind with many reactants. Show Answer Correct Answer: C) Precise fit with a particular substrate. 37. When atoms share electrons they create a bond called a(n) A) Covalent Bond. B) Ionic Bond. C) James Bond. D) Sodium Chloride Bond. Show Answer Correct Answer: A) Covalent Bond. 38. How many elements are C6H12O6? A) 4. B) 2. C) 3. D) 1. Show Answer Correct Answer: C) 3. 39. In which shel lor energy level are the valence electrons of the elements in period 2 found? A) 2. B) 4. C) 1. D) 3. Show Answer Correct Answer: A) 2. 40. Which statement is NOT true of chemical reactions? A) Synthesis reactions involve the breaking of bonds. B) Synthesis reactions usually require energy. C) Decomposition reactions involve the breaking of bonds. D) Decomposition reactions change large molecules to smaller ones. Show Answer Correct Answer: A) Synthesis reactions involve the breaking of bonds. 41. Covalent bonds mainly occur between A) Two nonmetallic elements. B) Two metallic elements. C) One metallic element and one nonmetallic element. D) One metalloid and one metallic element. Show Answer Correct Answer: A) Two nonmetallic elements. 42. What is the maximum capacity of electrons located in the d-sub shell? A) 6 electrons. B) 2 electrons. C) 14 electrons. D) 10 electrons. Show Answer Correct Answer: D) 10 electrons. 43. The energy required to start a chemical reaction is ..... A) Endothermic. B) Exothermic. C) Released. D) Activation. Show Answer Correct Answer: D) Activation. 44. The ..... is considered as standard by the IUPAC A) Hydrogen. B) Carbon-13. C) Carbon-12. D) Oxygen. Show Answer Correct Answer: C) Carbon-12. 45. Which area of chemistry focuses on the composition of matter? A) Analytical. B) Inorganic. C) Physical. D) Organic. Show Answer Correct Answer: A) Analytical. 46. Source of quick energy A) Nucleic acids. B) Carbohydrates. C) Lipids. D) Proteins. Show Answer Correct Answer: B) Carbohydrates. 47. The subatomic particle with a negative charge is the A) Nucleus. B) Electron. C) Proton. D) Neutron. Show Answer Correct Answer: B) Electron. 48. What elements is necessary for muscle contractions and nerve impulse transmission? A) Ca. B) Na & K. C) Fe. D) I. Show Answer Correct Answer: B) Na & K. 49. Value representing the number of protons in an element A) Atomic Number. B) Mass Number. C) Valence Electrons. D) Atomic Mass. Show Answer Correct Answer: A) Atomic Number. 50. The study of matter and its processes is A) Biology. B) Chemistry. C) Physics. D) Geology. Show Answer Correct Answer: B) Chemistry. 51. In preparing coffee using the Barako coffee beans, you may pour the boiled coffee mixture into a piece of cloth. Which method is being illustrated? A) Mechanical separation. B) Distillation. C) Decantation. D) Filtration. Show Answer Correct Answer: B) Distillation. 52. What are two properties of most nonmetals? A) High ionization energy and poor electrical conductivity. B) High ionization energy and good electrical conductivity. C) Low ionization energy and poor electrical conductivity. D) Low ionization energy and good electrical conductivity. Show Answer Correct Answer: A) High ionization energy and poor electrical conductivity. 53. The heat required to raise the temperature of body by 1 K is called A) Specific heat. B) Thermal capacity. C) Water equivalent. D) None of the above. Show Answer Correct Answer: B) Thermal capacity. 54. Water is considered a A) Molecule and a compound. B) Molecule only. C) Compound only. D) None of above. Show Answer Correct Answer: A) Molecule and a compound. 55. The atomic number is the number of ..... A) Protons plus neutrons. B) Electrons and protons. C) Neutrons and electrons. D) Protons, neutrons and electrons. Show Answer Correct Answer: B) Electrons and protons. 56. Which particle has a positive charge and is located at the center of an atom? A) Proton. B) Neutron. C) Electron. D) None of above. Show Answer Correct Answer: A) Proton. 57. An atoms overall charge is A) Negative. B) Depends on its mood. C) Neutral. D) Positive. Show Answer Correct Answer: C) Neutral. 58. An element's identity is determined by the number of A) Protons. B) Neutrons. C) Valence. D) Electrons. Show Answer Correct Answer: A) Protons. 59. The high reactivity of fluorine is due to? A) Strong F - F bond. B) Availability of d-orbitals. C) Its high electro negativity. D) Small size of fluorine atom. Show Answer Correct Answer: C) Its high electro negativity. 60. According to modern atomic theory, the exact location of ..... is uncertain A) Proton. B) Electron. C) Neutron. D) None of above. Show Answer Correct Answer: B) Electron. ← PreviousNext →Related QuizzesScience QuizzesGeneral Knowledge QuizzesChemistry Quiz 1Chemistry Quiz 2Chemistry Quiz 3Chemistry Quiz 4Chemistry Quiz 5Chemistry Quiz 6Chemistry Quiz 8Chemistry Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books