This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Chemistry > Chemistry – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 11 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. If body fluids are becoming too acidic, this means that there are excess ..... ions in the fluid? A) Hydroxyl. B) Hydrogen. C) Potassium. D) Sodium. Show Answer Correct Answer: B) Hydrogen. 2. Matter can be defined as anything that A) Has weight. B) Has mass and volume. C) Is uniform throughout. D) Exhibits both chemical and physical properties. Show Answer Correct Answer: B) Has mass and volume. 3. The nucleus of an atom is A) Negatively charged and has a high mass. B) Negatively charged and has a low mass. C) Positively charged and has a high mass. D) Positively charged and has a low mass. Show Answer Correct Answer: C) Positively charged and has a high mass. 4. An example of an extensive property is A) Density. B) Volume. C) Temperature. D) Color. Show Answer Correct Answer: B) Volume. 5. What is the number of neutrons in bromine-80? A) 115. B) 45. C) 35. D) 80. Show Answer Correct Answer: B) 45. 6. Which physical property of matter describes the relationship between mass and volume? A) Weight. B) Reactivity. C) Density. D) None of above. Show Answer Correct Answer: C) Density. 7. Calculate the molar masses of the following compounds and list in the correct order.H2, SO4, (NH4)2CO3, Pb3(PO4)2, C6H12O6, HCl A) 96, 36.5, 98, 811, 180. B) 98, 96, 811, 180, 36.5. C) 98, 83, 821, 180, 36.5. D) 98, 96, 811, 180, 37. Show Answer Correct Answer: B) 98, 96, 811, 180, 36.5. 8. A sample of methane, CH4, occupies 4.50 dm3 (Liters) at STPHow many moles of this gas are present. (Note:One mole of any gas occupies 22.4 liters at STP) A) 0.2. B) 16. C) 24. D) 2.0. Show Answer Correct Answer: A) 0.2. 9. How many hydrogens are in one molecule of water? A) Four. B) One. C) Two. D) Three. Show Answer Correct Answer: C) Two. 10. Which of the following is not a base physical quantity A) Mass. B) Force. C) Electric current. D) Luminous intensity. Show Answer Correct Answer: B) Force. 11. Which one of the following shows the correct charges? A) Proton neutralNeutron positiveElectron negative. B) Proton positiveNeutron neutralElectron negative. C) Proton positiveNeutron negativeElectron negative. D) Proton negativeNeutron nuetralElectron positive. Show Answer Correct Answer: B) Proton positiveNeutron neutralElectron negative. 12. A solution with a pH of 10 has a higher concentration of A) H3O+ than OH-and causes litmus to turn blue. B) H3O+ than OH-and causes methyl orange to turn red. C) OH-than H3O+and causes litmus to turn blue. D) OH-than H3O+and causes methyl orange to turn red. Show Answer Correct Answer: C) OH-than H3O+and causes litmus to turn blue. 13. Electronic configuration of Aluminium ( Al ) is ..... A) [ 2, 8, 1 ]. B) [ 2, 8, 3 ]. C) [ 2, 8, 4 ]. D) [ 2, 8, 2 ]. Show Answer Correct Answer: B) [ 2, 8, 3 ]. 14. Molality (m) = moles of solute / ..... A) Kilogram of solvent. B) Kiloliter of solvent. C) Kilometer of solvent. D) Ounces of solvent. Show Answer Correct Answer: A) Kilogram of solvent. 15. The order of elements in the periodic table is based on A) Atomic mass. B) Electric charge of nucleus. C) The number of neutrons in the nucleus. D) The number of protons in the nucleus. Show Answer Correct Answer: D) The number of protons in the nucleus. 16. An electron-dot diagram shows only the A) Nucleus. B) Valence electrons. C) Protons. D) Neutrons. Show Answer Correct Answer: B) Valence electrons. 17. How many different oxides are formed by nitrogen? A) 4. B) 2. C) 3. D) 1. Show Answer Correct Answer: B) 2. 18. If I gain electrons I become A) Negative because I've added electrons. B) Same because i'm balanced. C) Equal because now I have electrons. D) Positive because I've added to my atom. Show Answer Correct Answer: A) Negative because I've added electrons. 19. Which element has an atom with the greatest tendency to attract electrons in a chemical bond? A) S. B) C. C) Si. D) Cl. Show Answer Correct Answer: D) Cl. 20. An atom can be described as chemically inactive (will not form bonds) if its outermost electron shell contains ..... electrons. A) 8. B) 9. C) 1. D) None of above. Show Answer Correct Answer: A) 8. 21. Which macromolecule is the most abundant in our bodies? A) Water. B) Carbohydrates. C) Lipids. D) Proteins. Show Answer Correct Answer: D) Proteins. 22. N2 + 3H2 $\rightarrow$ 2NH3 How many moles of hydrogen are needed to react with 5 moles of nitrogen? A) 6. B) 15. C) 3. D) 2. Show Answer Correct Answer: B) 15. 23. Which has a charge of 1+? A) Neutron. B) Electron. C) Proton. D) Atom. Show Answer Correct Answer: C) Proton. 24. What is the pH of a solution that results from the complete neutralization of an HCl solution with NaOH solution? A) 10. B) 4. C) 7. D) 2. Show Answer Correct Answer: C) 7. 25. The monomer of a protein is called ..... A) A monosaccharide. B) An amino acid. C) A fatty acid. D) A nucleotide. Show Answer Correct Answer: B) An amino acid. 26. What happens when a neutral calcium atom becomes a calcium ion with a +2 charge? A) The atom loses two electrons. B) The atom gains two protons. C) The atom loses two protons. D) The atom gains two electrons. Show Answer Correct Answer: A) The atom loses two electrons. 27. If an atom has 5 protons and 4 electrons, what is its charge? A) Neutral. B) Unknown. C) Negative. D) Positive. Show Answer Correct Answer: D) Positive. 28. Atoms are mostly filled with? A) Electrons. B) Empty space. C) Protons. D) None of above. Show Answer Correct Answer: B) Empty space. 29. All noble gases are? A) Colourless. B) Odourless. C) Colourless and odourless. D) Colourless and but have odour. Show Answer Correct Answer: C) Colourless and odourless. 30. The gases H2, O2, and N2 are considered to be ..... A) Elements. B) Mixture. C) Compound. D) Atoms. Show Answer Correct Answer: C) Compound. 31. During lab activities you should always wear A) Goggles. B) An apron. C) Goggles and an apron. D) Just normal clothing. Show Answer Correct Answer: C) Goggles and an apron. 32. What is the noble gas configuration for phosphorus? A) [Ar] 3p5. B) [He] 3s2 3p5. C) [Ne] 3s2 3p3. D) [Na] 3s2 3p5. Show Answer Correct Answer: C) [Ne] 3s2 3p3. 33. The transfer of electrons occurs during A) Ionic bonding. B) Covalent bonding. C) Metallic bonding. D) The formation of molecules. Show Answer Correct Answer: A) Ionic bonding. 34. Human bone does not contain A) Oxygen. B) Phosphorous. C) Calcium. D) Carbon. Show Answer Correct Answer: A) Oxygen. 35. A bromine (Br) atom has ..... valence electrons A) Six. B) Nine. C) Eight. D) Seven. Show Answer Correct Answer: D) Seven. 36. Oxygens atomic number is 8. this means that an oxygen atom has A) 8 neutrons. B) Total of 8 protons and neutrons. C) 8 protons. D) Total of 8 neutrons and electrons. Show Answer Correct Answer: C) 8 protons. 37. A charged atom that has gained or lost electrons is known as a(n) ..... A) Isomer. B) Neutral atom. C) Ion. D) Isotope. Show Answer Correct Answer: C) Ion. 38. Who isolated oxygen gas, which he called "dephlogisticated air" by heating mercury oxide (HgO)? A) Robert Boyle. B) Joseph Priestly. C) Antoine-Laurent Lavoisier. D) John Dalton. Show Answer Correct Answer: B) Joseph Priestly. 39. How many atoms are present in 46 u of Na A) 1. B) 2. C) 23. D) 46. Show Answer Correct Answer: B) 2. 40. Which region of an atom has a negative charge? A) The nucleus. B) Both nucleus and electron cloud. C) The neutrons. D) The electron cloud. Show Answer Correct Answer: D) The electron cloud. 41. An acid is a molecule that releases (donates) ..... A) Hydroxyl ions. B) Electrons. C) Neutrons. D) Protons (hydrogen ions). Show Answer Correct Answer: D) Protons (hydrogen ions). 42. Petroleum is found in? A) Igneous rock. B) Marshy land. C) Sedimentary rocks. D) Metamorphic rocks. Show Answer Correct Answer: C) Sedimentary rocks. 43. How many joules are required to boil 75 grams of water? A) 25050J. B) 169500J. C) 31350J. D) 10000J. Show Answer Correct Answer: A) 25050J. 44. Being able to pull metal into thin wires A) Cation. B) Anion. C) Malleable. D) Ductile. Show Answer Correct Answer: D) Ductile. 45. A positively or negatively charged atom. A) Chemical bond. B) Compound. C) Ion. D) Covalent bond. Show Answer Correct Answer: C) Ion. 46. Charged particles. A) Neutrons. B) Atoms. C) Molecules. D) Ions. Show Answer Correct Answer: D) Ions. 47. A 22.4-L sample of which of the following substances, at STP, would contain 6.02 X 1023 representative particles? A) Oxygen. B) Sulfur. C) Cesium iodide. D) Gold. Show Answer Correct Answer: A) Oxygen. 48. The inherited traits of an organism are controlled by A) Nucleotides. B) RNA molecules. C) Enzymes. D) DNA molecules. Show Answer Correct Answer: D) DNA molecules. 49. What is the meaning of + used in a chemical equation? A) Gas. B) Yields. C) Heat is applied. D) Reacts with. Show Answer Correct Answer: D) Reacts with. 50. No attractive force between particles A) Solid. B) Liquid. C) Gas. D) None of above. Show Answer Correct Answer: C) Gas. 51. Energy is ..... when bonds break. A) Gained. B) Released. C) Lost. D) Absorbed. Show Answer Correct Answer: D) Absorbed. 52. Convert 436 K to degrees Celsius. A) 709. B) 163. C) 199. D) 673. Show Answer Correct Answer: B) 163. 53. What cells cause blood to clot? A) White blood. B) Red blood. C) Platelets. D) None of above. Show Answer Correct Answer: C) Platelets. 54. The first energy level can hold up to how many electrons? A) 4. B) 8. C) 5. D) 2. Show Answer Correct Answer: D) 2. 55. The central region of an atom where its neutrons and protons are is called A) Center. B) Electron cloud. C) Nucleus. D) Core. Show Answer Correct Answer: C) Nucleus. 56. A heterogeneous mixture can be separated by all of the following methods EXCEPT ..... A) Decantation. B) Mechanical separation. C) Filtration. D) Distillation. Show Answer Correct Answer: B) Mechanical separation. 57. An atom with extra neutrons in its nucleus is called a/an ..... A) Electron. B) Isotope. C) Anion. D) Cation. Show Answer Correct Answer: B) Isotope. 58. The major theory of reaction rate is called A) Newton's laws. B) Collision theory. C) Crash theory. D) Thermodynamics. Show Answer Correct Answer: B) Collision theory. 59. If the atomic number is 10 and the atomic mass is 23.10, how many protons does that atom have? A) 13. B) 10. C) 23. D) 23.10. Show Answer Correct Answer: B) 10. 60. What do you call the table of elements? A) Function table. B) Kitchen table. C) Excel table. D) Periodic table. Show Answer Correct Answer: D) Periodic table. ← 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