This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Chemistry > Chemistry Basics > Chemistry – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 5 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What type of substance is gold? A) Heterogeneous mixture. B) Compound. C) Element. D) Homogeneous mixture. Show Answer Correct Answer: C) Element. 2. What did James Chadwick discover? A) Proton. B) Neutron. C) Electron. D) Who cares I want to go home!. Show Answer Correct Answer: B) Neutron. 3. Which term does not fit with the others listed? A) Reactant. B) Solid. C) Liquid. D) Gas. Show Answer Correct Answer: A) Reactant. 4. Which compound can exist as stereoisomers? A) CH3CH2CHO. B) CH3CH(CH3)2. C) CH3CH2CHOHCH3. D) CH3CH2COCH3. Show Answer Correct Answer: C) CH3CH2CHOHCH3. 5. Molecules are separated by distances that are large compared with the size of the molecules. A) Gas. B) Solid. C) Liquid. D) None of above. Show Answer Correct Answer: A) Gas. 6. What does the symbol CaCO3 represent? A) An element. B) A compound. C) An atom. D) None of the above. Show Answer Correct Answer: B) A compound. 7. Which group of the periodic table is composed of inert (not reactive) gases? A) Noble gases. B) Alkali metals. C) Alkaline earth metals. D) Halogens. Show Answer Correct Answer: A) Noble gases. 8. The type of bond that results when electrons are transferred from one atom to another is called ..... A) An ionic bond. B) A covalent bond. C) A hydrogen bond. D) None of above. Show Answer Correct Answer: A) An ionic bond. 9. In chemical reactions, what does the principle of conservation of mass mean? A) Matter is not changed. B) The total mass of the reactants is greater than the total mass of the products. C) Atoms are not created or destroyed. D) The total mass of the reactants is less than the total mass of the products. Show Answer Correct Answer: C) Atoms are not created or destroyed. 10. What is the atomic number of calcium (Ca)? A) 20. B) 2. C) 18. D) 14. Show Answer Correct Answer: A) 20. 11. Two or more substances mingled together, but not chemically combined are known as a A) Distillate. B) Residue. C) Solution. D) Mixture. Show Answer Correct Answer: D) Mixture. 12. Which is a nonmetal? A) Li. B) Ge. C) Be. D) Cl. Show Answer Correct Answer: D) Cl. 13. The smallest particle of an element that retains its identity in a chemical reaction. A) Electron. B) Quark. C) Atom. D) Neutrons. Show Answer Correct Answer: C) Atom. 14. A small particle that is the building block of matter A) Mass. B) Atom. C) Matter. D) Element. Show Answer Correct Answer: B) Atom. 15. Number of alpha hydrogen atoms in 2-butene molecule is ..... A) 4. B) 3. C) 2. D) 6. Show Answer Correct Answer: D) 6. 16. ..... ft = 15.0 m A) 48.7. B) 50.9. C) 49.2. D) 158. Show Answer Correct Answer: C) 49.2. 17. A solute that contains polar molecules will dissolve in a solvent that contains A) Nonpolar molecules. B) Covalent molecules. C) Polar molecules. D) Equal-sized molecules. Show Answer Correct Answer: C) Polar molecules. 18. Makes up about 80% of the periodic table, good conductors of heat and electricity, high luster and malleable. A) Nonmetals. B) Metalloids. C) Metals. D) Transition elements. Show Answer Correct Answer: C) Metals. 19. Why do ice cubes float in a glass of water? A) The water is more dense than the ice cubes. B) The ice is more dense than the glass. C) The water is more dense than the glass. D) The ice cubes are more dense than the water. Show Answer Correct Answer: A) The water is more dense than the ice cubes. 20. The branch of chemistry that includes studying the reaction rates of a chemical change. A) Physical chemistry. B) Analytical chemistry. C) Inorganic chemistry. D) Organic chemistry. Show Answer Correct Answer: A) Physical chemistry. 21. The mass of 0.029 m3 of gold is about 546kg, and the density is 19300kg/m3. It is a soft metal and is usually alloyed to give it more strength. It is a good conductor of heat and electricity, and it has high melting point (1062 $^ \circ$C ) and boiling point (2000 $^ \circ$C).Which of the following is an extensive property of gold? A) Density. B) Melting. C) Boiling point. D) Mass. Show Answer Correct Answer: D) Mass. 22. Several drops of nitric acid are added to a test tube that is filled with potassium chloride solution. What is the most suitable pH value for the mixture? A) 5.5. B) 2.0. C) 9.8. D) 7.0. Show Answer Correct Answer: B) 2.0. 23. What kind of properties can only be observed when a substance changes into a different substance? A) Real properties. B) Liquid properties. C) Physical properties. D) Chemical properties. Show Answer Correct Answer: D) Chemical properties. 24. A displacement reaction will occur when ..... A) A more reactive metal displaces a less reactive metal from its compound. B) A less reactive metal displaces a more reactive metal from its compound. C) Displacement only occurs when two of the same metals are reacted. D) Displacement reactions will only occur in metals above iron in the reactivity series. Show Answer Correct Answer: A) A more reactive metal displaces a less reactive metal from its compound. 25. Bohr's Planetary Model represented what? A) Protons spin around the nucleus in fixed orbitals. B) Every atom is a little planet. C) An atom is a round sphere shaped like a planet. D) Electrons spin around the nucleus in a fixed orbital. Show Answer Correct Answer: D) Electrons spin around the nucleus in a fixed orbital. 26. When you change from gas to liquid it is called.. A) Condensation. B) Melting. C) Freezing. D) Evaporation. Show Answer Correct Answer: A) Condensation. 27. The method and instrument used to measure the $ Melting\ & amp;\ Boiling\ point$ of a substance is studied under ..... A) Environmental Chemistry. B) Biochemistry. C) Industrial Chemistry. D) Analytical Chemistry. Show Answer Correct Answer: D) Analytical Chemistry. 28. What takes place when a solid changes to a liquid? A) Melting. B) Condensation. C) Freezing. D) Evaporation. Show Answer Correct Answer: A) Melting. 29. An oil company scientist tries to design a better gasoline A) Organic chemistry. B) Biochemistry. C) Analytical chemistry. D) Theoretical chemistry. Show Answer Correct Answer: A) Organic chemistry. 30. The number in front of a chemical formula that tells how many molecules or atoms of each reactant takes part in a reaction is called a: A) Symbol. B) Coefficient. C) Concentration. D) Subscript. Show Answer Correct Answer: B) Coefficient. 31. What is the name of the compound NiSO4? A) Nickel (II) sulfite. B) Nickel (II) sulfuroxide. C) Nickel (II) sulfide. D) Nickel (II) sulfate. Show Answer Correct Answer: D) Nickel (II) sulfate. 32. Hydrogen peroxide is a(n) A) Mixture. B) Compound. C) Element. D) None of above. Show Answer Correct Answer: B) Compound. 33. The atomic mass of an element is equal to A) The number of protons and electrons. B) The number of protons and neutrons. C) The number of electrons and neutrons. D) None of above. Show Answer Correct Answer: B) The number of protons and neutrons. 34. A type of mixture in which the composition of the mixture is not uniform. A) Extensive Mixture. B) Intensive Mixture. C) Heterogeneous Mixture. D) Homogeneous Mixture. Show Answer Correct Answer: C) Heterogeneous Mixture. 35. Which of the following is a sign that a chemical reaction has occurred? A) Dissolving. B) Change in shape. C) Formation of a gas. D) Melting. Show Answer Correct Answer: C) Formation of a gas. 36. A sample of a substance has a mass of 7.3 g and a volume of 2.8 cm3. What is the objects density? A) 10.1 g/cm3. B) 20.44 g/cm3. C) 2.61 g/cm3. D) 0.38 g/cm3. Show Answer Correct Answer: C) 2.61 g/cm3. 37. Name the elements present in Ammonia A) Nitrogen. B) Hydrogen. C) Both nitrogen and hydrogen. D) None of above. Show Answer Correct Answer: C) Both nitrogen and hydrogen. 38. What is the functionof water in the following equation? NaOH + HCl $\rightarrow$ NaCl + H2O A) It is a reaction. B) It is an element. C) It is a reactant. D) It is a product. Show Answer Correct Answer: D) It is a product. 39. When a gas is compressed, what happens to its volume? A) The volume of the gas does not change. B) The volume of the gas increases. C) The volume of the gas decreases. D) The volume of the gas increases and then decreases. Show Answer Correct Answer: C) The volume of the gas decreases. 40. James believes that volume is an intensive property. Which of the following is true? A) James is correct because an intensive property does not depend on the size or amount of material in the sample. B) James is correct because an extensive property depends on the size and amount of material in the sample. C) James is incorrect because an intensive property does not depend on the size or amount of material in the sample. D) James is incorrect because an extensive property does not depend on the size or amount of material in the sample. Show Answer Correct Answer: B) James is correct because an extensive property depends on the size and amount of material in the sample. 41. Mixtures differ from substances because the composition of a mixture can ..... A) Vary. B) Change. C) Combine. D) None of above. Show Answer Correct Answer: A) Vary. 42. What two molecules are located inside of the nucleus of an atom? A) Electrons and Neutrons. B) Protons and Electrons. C) Protons and Neutrons. D) None of above. Show Answer Correct Answer: C) Protons and Neutrons. 43. Unit cell of a crystal is defined by its ..... A) Dimension. B) Lattice points. C) End points. D) None of above. Show Answer Correct Answer: B) Lattice points. 44. Which of the following is not a compound? A) NaCl. B) CO2. C) Cl. D) HCl. Show Answer Correct Answer: C) Cl. 45. ..... discovered carbon. A) Ibn e sina. B) Al razi. C) J. Black. D) J. Priestly. Show Answer Correct Answer: C) J. Black. 46. Almost every situation you can imagine involves a chemist, because ..... A) Chemists are well-paid. B) Everything is made of matter. C) Ozone depletion is a problem. D) Chemists are nosy. Show Answer Correct Answer: B) Everything is made of matter. 47. Cm3 of 1.0 mol dm-3 hydrochloric acid is neutralized by 25cm3 of barium hydroxide solution. What is the molarity of barium hydroxide? A) 0.800 mol dm-3. B) 0.625 mol dm-3. C) 3.500 mol dm-3. D) 1.600 mol dm-3. Show Answer Correct Answer: A) 0.800 mol dm-3. 48. The ability of an atom to attract electrons when the atom is in a compound. A) First ionization energy. B) Electronegativity. C) Atomic radii. D) All of the above. Show Answer Correct Answer: B) Electronegativity. 49. In a covalent bond, electrons are A) Pulled apart. B) Shared. C) In the nucleus. D) Gained. Show Answer Correct Answer: B) Shared. 50. Which of the following is true about ammonia solution in methylbenzene? A) Has pH value more than 7. B) No change on red litmus paper. C) Ionises partially to produce hydroxide ions. D) Ammonium ions and hydroxide ions move freely in the solution. Show Answer Correct Answer: B) No change on red litmus paper. 51. How would you describe the way molecules move when the molecules are solid? A) The molecules are moving away from each other. B) The molecules are moving in place. C) The molecules are moving around each other. D) The molecules are not moving. Show Answer Correct Answer: B) The molecules are moving in place. 52. What is a mixture? A) A combination of elements to make a new substance. B) A chemically combined substance. C) A combination of substances where new substances are formed through a reaction. D) A combination of substances in which the atoms of the substance do not chemically combine. Show Answer Correct Answer: D) A combination of substances in which the atoms of the substance do not chemically combine. 53. What is the correct name of the compound NO2? A) Nitrogen dioxide. B) Nitrogen oxide. C) Mononitrogen dioxide. D) Dinitrogen monoxide. Show Answer Correct Answer: A) Nitrogen dioxide. 54. How many electrons should Beryllium have around its Lewis dot model? A) 1. B) 4. C) 2. D) 3. Show Answer Correct Answer: C) 2. 55. In any physical or chemical change, mass is ..... A) Created. B) Changed. C) Conserved. D) Destroyed. Show Answer Correct Answer: C) Conserved. 56. These kind of observations are made using instruments such as rulers, balances and thermometers. A) Qualitative. B) Quantitative. C) Scientific. D) None of above. Show Answer Correct Answer: B) Quantitative. 57. In the chemicalsymbol for nitrogen gas, N2, what does the "2" represent? A) Two nitrogen symbols. B) Two nitrogen atoms. C) Two nitrogen compounds. D) Two types of nitrogen gas. Show Answer Correct Answer: B) Two nitrogen atoms. 58. What is green chemistry? A) The utilization of a set of guidelines that increases or adds the use or generation of hazardous substances in the design, manufacture and application of chemical products. B) The utilization of a set of principles that reduces or eliminates the use or generation of hazardous substances in the design, manufacture and application of chemical products. C) A form of chemistry that focuses on how the color green was chemically formed and its components. D) None of above. Show Answer Correct Answer: B) The utilization of a set of principles that reduces or eliminates the use or generation of hazardous substances in the design, manufacture and application of chemical products. 59. Mixtures are separated through ..... changes. A) Mixture. B) Compound. C) Physical. D) None of above. Show Answer Correct Answer: C) Physical. 60. Which substance is a compound? A) SiH3. B) SiH3. C) Sih3. D) Sih3. Show Answer Correct Answer: A) SiH3. ← PreviousNext →Related QuizzesChemistry QuizzesScience QuizzesChemistry Quiz 1Chemistry Quiz 2Chemistry Quiz 3Chemistry Quiz 4Chemistry Quiz 6Chemistry Quiz 7Chemistry Quiz 8Chemistry Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books