This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Chemistry > Chemistry – Quiz 13 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 13 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When is it OK to eat or drink at the lab tables? A) During lab activities. B) During group work, but not during lab activities. C) Never. D) Always. Show Answer Correct Answer: C) Never. 2. It describes the distribution of electrons. A) Electron Configuration. B) Electron Formation. C) Electron Design. D) None of above. Show Answer Correct Answer: A) Electron Configuration. 3. Which are of chemistry focuses on molecules that contain carbon? A) Inorganic. B) Organic. C) Quantitative. D) Biochemistry. Show Answer Correct Answer: B) Organic. 4. It exist between all atoms and molecules. A) London dispersion forces. B) Hydrogen bond. C) Ion dipole forces. D) Dipole dipole forces. Show Answer Correct Answer: A) London dispersion forces. 5. What are the two main types of chemical bonds? A) Covalent and Van der Waals force. B) Hydrogen bond and ionic bond. C) Ionic bond and covalent bond. D) Hydrogen bond and Van der Waals force. Show Answer Correct Answer: C) Ionic bond and covalent bond. 6. The number of protons in the nucleus of an atom? A) Element. B) Atomic mass. C) Atomic number. D) Isotope. Show Answer Correct Answer: C) Atomic number. 7. Solutions and alloys are kinds of A) Heterogeneous mixtures. B) Homogeneous mixtures. C) Pure substances. D) Alloys. Show Answer Correct Answer: B) Homogeneous mixtures. 8. What is the molar mass of (NH4)2CO3? A) 138 g. B) 78 g. C) 96 g. D) 144 g. Show Answer Correct Answer: C) 96 g. 9. Which is heavier, a proton or an electron? A) 6.02 x 1023. B) A proton. C) An electron. D) They are the same. Show Answer Correct Answer: B) A proton. 10. Which of the following is NOT an intermolecular force? A) Covalent bonding. B) Dipole-dipole forces. C) Hydrogen bonding. D) None of above. Show Answer Correct Answer: A) Covalent bonding. 11. Conduction band electrons have more mobility than holes because they are A) Need less energy to move them. B) Have negative charge. C) Experience collision less frequently. D) Experience collision more frequently. Show Answer Correct Answer: C) Experience collision less frequently. 12. It is a negatively charged ion. Non-metals typically form them by gaining electrons.a) Anions b) cations c) cathode d anode A) Anode. B) Cations. C) Anions. D) Cathode. Show Answer Correct Answer: C) Anions. 13. A homogeneous mixture or one phase A) Saturated solution. B) Solution. C) Solvent. D) Solute. Show Answer Correct Answer: B) Solution. 14. What is the mass of 2.50 mol of oxygen gas (O2)? A) 32.0 g. B) 16.0 g. C) 80.0 g. D) 40.0 g. Show Answer Correct Answer: C) 80.0 g. 15. The difference between atoms and ions can be summarized by the following A) Atoms have equal numbers of protons and electrons, whereas ions do not. B) Atoms have equal numbers of neutrons, whereas ions do not. C) Atoms have equal numbers of protons and neutrons, whereas ion do not. D) None of above. Show Answer Correct Answer: A) Atoms have equal numbers of protons and electrons, whereas ions do not. 16. Solid turning directly into a gas.a) Evaporation b) solidification c) sublimation d) condensation A) Evaporation. B) Sublimation. C) Condensation. D) Solidification. Show Answer Correct Answer: B) Sublimation. 17. Bonds where there is unequal sharing of electrons are called A) Polar Covalent Bonds. B) Ionic Bonds. C) Non-Polar Covalent Bonds. D) London Forces. Show Answer Correct Answer: A) Polar Covalent Bonds. 18. According to Bohr's theory, an electron's path around the nucleus defines its A) Speed. B) Energy level. C) Atomic mass. D) Electric charge. Show Answer Correct Answer: B) Energy level. 19. CnH2n is the general formula for ..... series .i. Alkaneii. Alkeneiii. Cyclic alkaneiv. Cyclic alkene A) I and ii only. B) Ii only. C) Ii and iii only. D) Ii and iv only. Show Answer Correct Answer: C) Ii and iii only. 20. Basic unit of elements A) Atom. B) Heterogeneous mixtures. C) Compound. D) Homogeneous mixtures. Show Answer Correct Answer: A) Atom. 21. Which of these would be a positive ion? A) An atom with 6 protons and 5 electrons. B) An atom with 5 protons and 6 electrons. C) An atom with 5 protons and 5 electrons. D) An atom with 6 protons and 6 electrons. Show Answer Correct Answer: A) An atom with 6 protons and 5 electrons. 22. What is a valence? A) The outer electron cloud of an atom. B) A subatomic particle. C) A material that cannot be split into simpler materials; each element is made of only one kind of atom. D) The total amount of matter in something. Show Answer Correct Answer: A) The outer electron cloud of an atom. 23. If an element has 3 valence electrons, what charge will likely form on its ion? A) -5. B) -3. C) +5. D) +3. Show Answer Correct Answer: D) +3. 24. Which of the following is a example of extensive property? A) Temperature. B) Density. C) Color. D) Weight. Show Answer Correct Answer: D) Weight. 25. How do you neutralize a strong acid? A) A weak acid. B) A strong base. C) Water. D) A weak base. Show Answer Correct Answer: B) A strong base. 26. Mole of copper (Cu) is equal to how many atoms? A) 4.51 x 1023 atoms. B) 8.03 x 1023 atoms. C) 3.11 x 1023 atoms. D) 6.02 x 1023 atoms. Show Answer Correct Answer: A) 4.51 x 1023 atoms. 27. An element's molar mass can be found on what part of an element's entry on the periodic table? A) It can't be found on the periodic table. B) Atomic mass. C) Atomic number. D) Group number. Show Answer Correct Answer: B) Atomic mass. 28. Intracellular fluid is the name for water found in A) Tissues spaces. B) Arteries and veins. C) Cells. D) Lymph vessels. Show Answer Correct Answer: C) Cells. 29. How many atoms are there in chemical formula (H2SO4)? A) 5. B) 3. C) 7. D) 6. Show Answer Correct Answer: C) 7. 30. The small number that is written below the symbol and shows how many atoms of each element is present. A) Molecule. B) Coefficient. C) Subscript. D) Compound. Show Answer Correct Answer: C) Subscript. 31. The calculations of quantities in a chemical reaction A) Balanced Chemical equations. B) Stoichiometry. C) Lewis Structures. D) Dimensional analysis. Show Answer Correct Answer: B) Stoichiometry. 32. Who defined "element" as the simplest composition of matter that cannot be broken down further by any chemical means? A) John Dalton. B) Robert Boyle. C) Antoine-Laurent Lavoisier. D) Joseph Priestly. Show Answer Correct Answer: B) Robert Boyle. 33. Which of the following is not a job of a protein A) Act as hormones and enzymes. B) Do much of the work in cells and transport materials. C) Build tissues and muscles. D) Store and transmit genetic information. Show Answer Correct Answer: D) Store and transmit genetic information. 34. Indicates the relative number of moles of each reactant and product in a chemical reaction A) Elements. B) Avogadro's #. C) Coefficients. D) Atoms. Show Answer Correct Answer: C) Coefficients. 35. What charge does an atom have when it GAINS electrons? A) Positive. B) Negative. C) Neutral. D) None of above. Show Answer Correct Answer: B) Negative. 36. What type of charge does a proton have? A) Positive. B) Negative. C) Neutral. D) None of above. Show Answer Correct Answer: A) Positive. 37. Bond where electrons are shared unequally A) Polar covalent. B) Hydrogen. C) Ionic. D) Non-polar covalent. Show Answer Correct Answer: A) Polar covalent. 38. The electrons in the outermost energy level of an atom are called A) Leveling electrons. B) Valence electrons. C) Bonding electrons. D) Energy electrons. Show Answer Correct Answer: B) Valence electrons. 39. The elements:C H O N typically represent what proportion of an organism's element make up? A) 78%. B) 68%. C) 82%. D) 96%. Show Answer Correct Answer: D) 96%. 40. Sugar has been dissolved in water. If you want to recover the sugar which process should be carried on? A) Filtration. B) Neutralization. C) Condensation. D) Evaporation. Show Answer Correct Answer: D) Evaporation. 41. An atom of potassium has atomic mass of 39 amu's and an atomic number of 19. therefore it has how many neutrons A) 19. B) 21. C) 18. D) 20. Show Answer Correct Answer: D) 20. 42. When the molecules are moving very fast, the substance is ..... A) Cold. B) Wet. C) Room Temperature. D) Hot. Show Answer Correct Answer: D) Hot. 43. A/an ..... is made up of one or more of the same kinds of atom chemically combined. A) Molecule. B) Element. C) Atom. D) Compound. Show Answer Correct Answer: A) Molecule. 44. The molecule which has the highest percentage of ionic character among the following is A) HF. B) HBr. C) HCI. D) HI. Show Answer Correct Answer: A) HF. 45. Three of the following must contain two more kinds of atoms. Which one does not contain two or more kinds of atoms? A) Homogeneous mixture. B) Element. C) Compound. D) Heterogenous mixture. Show Answer Correct Answer: B) Element. 46. Atoms of the same element, having different mass numbers but the same atomic number is referred to as ..... A) Ions. B) Molecules. C) Isotopes. D) Particles. Show Answer Correct Answer: C) Isotopes. 47. What is an atomic number? A) The number of electrons in an atom. B) The number of protons in an atom. C) The number of neutrons in an atom?. D) The total number of protons and neutrons in an atom. Show Answer Correct Answer: B) The number of protons in an atom. 48. The smallest unit of matter that retains the properties of that matter is A) A molecule. B) A compound. C) A mixture. D) An atom. Show Answer Correct Answer: D) An atom. 49. Which element has 14 protons? A) Aluminum. B) Sulfur. C) Silicon. D) Nitrogen. Show Answer Correct Answer: C) Silicon. 50. Energy is ..... when new bonds form. A) Absorbed. B) Lost. C) Released. D) Gained. Show Answer Correct Answer: C) Released. 51. What would be the average mass of 6 apples? A) 0.50 kg. B) 1.0 kg. C) 4.0 kg. D) 2.0 kg. Show Answer Correct Answer: B) 1.0 kg. 52. It is the amount of heat required to vaporize one mole of a substance at its boiling point. A) Surface tension. B) Heat of vaporization. C) Molar heat of vaporization. D) Vapor pressure. Show Answer Correct Answer: C) Molar heat of vaporization. 53. The Apple is red is an example of? A) Chemical property. B) Physical change. C) Physical property. D) Chemical change. Show Answer Correct Answer: C) Physical property. 54. The tendency of an atom to pull electrons toward itself is referred to as its ..... A) Ionic potential. B) Electronegativity. C) Covalency. D) Porlatity. Show Answer Correct Answer: B) Electronegativity. 55. Iodine can be separated from a mixture of Iodine and Potassium Chloride by? A) Distillation. B) Sedimentation. C) Sublimation. D) Filtration. Show Answer Correct Answer: C) Sublimation. 56. Is used in collecting a pure liquid from mixture of liquids through the processes of evaporation and condensation A) Distillation. B) Chromatography. C) Liquid-liquid extraction. D) Centrifugation. Show Answer Correct Answer: A) Distillation. 57. How are ionic and covalent bonds alike? A) They both form organic molecules. B) They both fill outer electron shells. C) They both transfer electrons from one atom to another. D) They both transfer protons from one atom to another. Show Answer Correct Answer: B) They both fill outer electron shells. 58. Average atomic mass of potassium is 39 amu. what is the mass of 2 mol? A) .39. B) 78. C) 39. D) .78. Show Answer Correct Answer: B) 78. 59. Which of the following symbols does not match the element name given/ A) P, phosphorus. B) K, potassium. C) Al, aluminum. D) Co, copper. Show Answer Correct Answer: D) Co, copper. 60. What property of water allows insects to walk upon it? A) Adhesion. B) Surface tension. C) High heat capacity. D) None of above. Show Answer Correct Answer: B) Surface tension. ← 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