This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Chemistry > Chemistry Basics > 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. Sandra was burning a vanilla candle. Was there a chemical reaction? A) No, because the ash formed was a different substance. B) Yes, because heat was added. C) Yes, because the properties of the wick changed. D) No, because burning is never a chemical reaction. Show Answer Correct Answer: C) Yes, because the properties of the wick changed. 2. The amount of matter in an object is a measure of the object's ..... A) Solubility. B) Volume. C) Density. D) Mass. Show Answer Correct Answer: D) Mass. 3. Process from solid to liquid. A) Freezing. B) Evaporation. C) Melting. D) Sublimation. Show Answer Correct Answer: C) Melting. 4. The ..... contains the protons and neutrons of an atom, and is most of the mass of an atom A) Atomic Number. B) Nucleus. C) Electrons. D) Atomic Mass. Show Answer Correct Answer: B) Nucleus. 5. Most elements are what phase at room temperature? A) Liquid. B) Plasma. C) Gas. D) Solid. Show Answer Correct Answer: D) Solid. 6. Other term for coordination number A) Con. B) Ligancy. C) Coordination. D) None of above. Show Answer Correct Answer: B) Ligancy. 7. What is the left part of a chemical equation called? H 2 + $\rightarrow$ H2O A) Yields. B) Products. C) Reactants. D) Chemical Equation. Show Answer Correct Answer: C) Reactants. 8. An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number. A) 20. B) 5. C) 25. D) 10. Show Answer Correct Answer: C) 25. 9. A certain element is dense, shiny, and is a goodconductor of both heat and electricity. Based on these characteristics, whattype of element is this? A) Metal. B) Nonmetal. C) Metalloid. D) Plastic. Show Answer Correct Answer: A) Metal. 10. A displacement reaction is a chemical reaction in which a ..... element displaces another element A) More. B) Moore. C) The same. D) Less. Show Answer Correct Answer: A) More. 11. A ..... is a group of two or more atoms that are held together by chemical bonds A) Element. B) Chemical. C) Molecule. D) Atom. Show Answer Correct Answer: C) Molecule. 12. An element with a mass number of 10 and an atomic number of 6 has how many protons? A) 5. B) 10. C) 6. D) 8. Show Answer Correct Answer: C) 6. 13. What is H 2 4 made up of? A) 1 hydrogen, 2 sulfur, 4 oxygen. B) 2 hydrogen, 1 sulfur, 4 oxygen. C) 2 hydrogen & 4 sodium. D) 1 hydrogen & 6 sodium. Show Answer Correct Answer: B) 2 hydrogen, 1 sulfur, 4 oxygen. 14. Which of the following is not considered a major element of life? A) Oxygen. B) Nitrogen. C) Hydrogen. D) Calcium. E) Carbon. Show Answer Correct Answer: D) Calcium. 15. ..... refers to the way a metal can be hammered or rolled into thin sheets. A) Ductility. B) Luster. C) Malleability. D) Conductivity. Show Answer Correct Answer: C) Malleability. 16. Mixtures that have the same composition throughout are ..... A) Homogeneous. B) Heterogeneous. C) Elements. D) Pure substances. Show Answer Correct Answer: A) Homogeneous. 17. What is organic chemistry? A) Chemistry involving micro-organisms. B) Chemistry involving oxygen. C) Chemistry involving carbon. D) Chemistry relating to biological organisms. Show Answer Correct Answer: C) Chemistry involving carbon. 18. The production of useful substances by use of technology is studied under which branch of chemistry? A) Analytical Chemistry. B) Industrial Chemistry. C) Biochemsitry. D) Environmental Chemsitry. Show Answer Correct Answer: B) Industrial Chemistry. 19. Air is an example of ..... A) Mixture. B) Element. C) Compound. D) None of above. Show Answer Correct Answer: A) Mixture. 20. What do cells use proteins to do? A) Make new proteins. B) Build and repair body structures. C) Regulate life processes. D) All of the above. Show Answer Correct Answer: D) All of the above. 21. The degree of hot or coldness of an object is its ..... A) Weight. B) Volume. C) Mass. D) Temperature. Show Answer Correct Answer: D) Temperature. 22. Study which involves changes in nucleus of element A) Nuclear chemistry. B) Biological chemistry. C) Analytical chemistry. D) Modern chemistry. Show Answer Correct Answer: A) Nuclear chemistry. 23. Elements which are shiny, conduct electricity and heat are called ..... A) Metals. B) Non-metals. C) Metalloids. D) Non-existent. Show Answer Correct Answer: A) Metals. 24. In the laboratory, one should NEVER ..... A) Ask questions. B) Know how to contact help. C) Wear safety goggles and a lab apron. D) Perform experiments without your teacher's permission. Show Answer Correct Answer: D) Perform experiments without your teacher's permission. 25. A professor explores the toxic compounds in marine animals A) Basic research. B) Applied research. C) Technological research. D) None of above. Show Answer Correct Answer: A) Basic research. 26. Substances are changed into different substances when bonds break and form during A) Chemical reactions. B) Ion formation. C) Hydrogen bonding. D) Chemical equilibrium. Show Answer Correct Answer: A) Chemical reactions. 27. What is a substance that is dissolved in another substance? A) Solute. B) Solution. C) Solvent. D) Compound. Show Answer Correct Answer: A) Solute. 28. A substance composed of atoms of two or more elements chemically united in fixed proportions. A) Element. B) Compound. C) Mixture. D) Pure Substance. Show Answer Correct Answer: B) Compound. 29. The study of matter and the changes it undergoes. A) Chemistry. B) Analytical Chemistry. C) Physical Chemistry. D) Biochemistry. Show Answer Correct Answer: A) Chemistry. 30. Which physical properties are associated with most metals? A) Dull, good insulator, brittle. B) Dull, good conductors, malleable. C) Shiny, good conductors, malleable. D) Shiny, good insulator, malleable. Show Answer Correct Answer: C) Shiny, good conductors, malleable. 31. Saponification is used to make what? A) Perfume. B) Juice. C) Soap. D) Lotion. Show Answer Correct Answer: C) Soap. 32. Water is an example of: A) Compound. B) Element. C) Solution. D) None of above. Show Answer Correct Answer: A) Compound. 33. The building blocks of ..... are nucleotides. A) Carbohydrates. B) Nucleic acids. C) Proteins. D) Lipids. Show Answer Correct Answer: B) Nucleic acids. 34. The atom around which the electrons spend the most time will have a ..... charge, and the atom around which the electrons spend the least time will have a ..... charge. A) Only positive charge. B) Only negative charge. C) Slightly negative, slightly positive. D) Neutral charge. Show Answer Correct Answer: C) Slightly negative, slightly positive. 35. An element with a mass number of 11 and an atomic number of 5 has how many neutrons? A) 5. B) 6. C) 11. D) 16. Show Answer Correct Answer: B) 6. 36. Substance produced in a reaction. A) Substance. B) Product. C) Mass. D) Reactant. Show Answer Correct Answer: B) Product. 37. The maximum amount of solute that can dissolve in a given amount of solvent at a given temperature and pressure A) Dissolve. B) Compound. C) Solubility. D) Concentration. Show Answer Correct Answer: C) Solubility. 38. If 238 J of heat is absorbed by a sample of metal with a mass of 40.7 g, and it raises the temperature from 20.0$^ \circ$C to 32.4$^ \circ$C, what is the specific heat capacity of the metal? A) 0.472 J/g$^ \circ$C. B) 6.13 J/g$^ \circ$C. C) 2.34 J/g$^ \circ$C. D) 0.163 J/g$^ \circ$C. Show Answer Correct Answer: A) 0.472 J/g$^ \circ$C. 39. It is one of the frontiers that the chemists are currently exploring in relation to the planting and harvesting of good quality crops. A) Health and Medicine. B) Food and Agriculture. C) Materials and Technology. D) Energy and Environment. Show Answer Correct Answer: B) Food and Agriculture. 40. Which of the following is not a property of a material? A) Flexibility. B) Ability to transmit light. C) Shape. D) Luster. Show Answer Correct Answer: C) Shape. 41. A row across the Periodic Table where each element has the same number of energy shells A) Column. B) Family. C) Period. D) None of above. Show Answer Correct Answer: C) Period. 42. Salt water boils and the water completely evaporates, salt (NaCl) is left in the bottom of the beaker. Which of the following is left in the beaker? A) Compound. B) Element. C) Mixture. D) None of the Above. Show Answer Correct Answer: A) Compound. 43. How many sig figs are there? 27000000 A) 2. B) 5. C) 8. D) None of above. Show Answer Correct Answer: A) 2. 44. What is a compound? A) A combination only of 3 elements. B) A combination of 2 or more elements. C) The simplest form of a substance. D) A place where people are held. Show Answer Correct Answer: B) A combination of 2 or more elements. 45. Choose the particle that has no charge. A) Neutron. B) Electron. C) Nucleus. D) Proton. Show Answer Correct Answer: A) Neutron. 46. How does oxygen become an oxide ion? A) It loses 2 electrons. B) It releases energy. C) It gains 2 electrons. D) It shares electrons. Show Answer Correct Answer: C) It gains 2 electrons. 47. It is one of the frontiers that the chemists are currently exploring in relation to the prevention and treatment of diseases, and research about potent drugs. A) Health and Medicine. B) Materials and Technology. C) Food and Agriculture. D) Energy and Environment. Show Answer Correct Answer: A) Health and Medicine. 48. The following are the physical properties of Graphene except A) Translucent. B) Bad heat insulator. C) Hard and strong. D) Permeable. Show Answer Correct Answer: D) Permeable. 49. What is a pure substance that cannot be broken down into any other substance by physical or chemical means. Ex:Gold, Silver, Oxygen, & Nitrogen A) Salad. B) Compound. C) Mixture. D) Element. Show Answer Correct Answer: D) Element. 50. The mass of $ one\ MOLE$ of a substance is called ..... A) Atomic mass. B) Formula mass. C) Molar mass. D) Molecular mass. Show Answer Correct Answer: C) Molar mass. 51. The Maillard reaction usually requires ..... in the cooking process. A) Hot weather. B) Cold weather. C) Ice. D) Heat. Show Answer Correct Answer: D) Heat. 52. What's the difference between a prokaryotic cells and euykarotic cells? A) Only eukaryotic cells have a cell membrane. B) Only prokaryotic cells have genetic material. C) Only eukaryotic cells have membrane-bound organelles. D) Only prokaryotic cells have cytoplasm. Show Answer Correct Answer: C) Only eukaryotic cells have membrane-bound organelles. 53. Which branch of chemistry would look at the efficiency of a medication based on its reactions within a human body? A) Biochemistry. B) Physical. C) Organic. D) Inorganic. Show Answer Correct Answer: A) Biochemistry. 54. How do gates at an event function in a similar way to the cell membranes? A) Gates charge you to get in. B) Gates keep everything out. C) Gates control how people enter and exit. D) All of the above. Show Answer Correct Answer: C) Gates control how people enter and exit. 55. Matter with a definite shape and volume A) Solid. B) Gas. C) Plasma. D) Liquid. Show Answer Correct Answer: A) Solid. 56. An element is made of ..... A) Atoms that are all the same. B) Different types of atoms. C) Air. D) Liquids and solids. Show Answer Correct Answer: A) Atoms that are all the same. 57. Gallons = ..... hL A) 20. B) 0.19. C) 1900. D) 0.20. Show Answer Correct Answer: D) 0.20. 58. Which of the following are NOT signs that a chemical reaction occured? A) Bubbles of gas formed. B) The properties changed. C) Smells different. D) Color stays the same. Show Answer Correct Answer: D) Color stays the same. 59. The chemical bond formed when two atoms share electrons is called a(n) A) Covalent bond. B) Ionic bond. C) Orbital bond. D) Lewis structure. Show Answer Correct Answer: A) Covalent bond. 60. Which units of measurement are used for volume? A) Grams/milliliter. B) Centimeters. C) Milliliter. D) Grams. Show Answer Correct Answer: C) Milliliter. ← PreviousNext →Related QuizzesChemistry QuizzesScience 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