This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Chemistry > Chemistry Basics > Chemistry – Quiz 19 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 19 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In a family or column, the elements have similar properties because they all have the same number of A) Valence electrons. B) Electrons. C) Neutrons. D) Protons. Show Answer Correct Answer: A) Valence electrons. 2. Water is important because ..... A) Life processes take place in the cells. B) Helps the cells keep their size. C) Helps the cells keep their shape. D) All of the above. Show Answer Correct Answer: D) All of the above. 3. Molecules are held close together in an orderly fashion with little freedom of motion. A) Gas. B) Solid. C) Liquid. D) None of above. Show Answer Correct Answer: B) Solid. 4. The energy transferred as a result of a temperature difference. A) Heat. B) Joules. C) Vapor. D) Sunlight. Show Answer Correct Answer: A) Heat. 5. In which state of matter are the atoms tightly packed together? A) Liquid. B) Gas. C) Plasma. D) Solid. Show Answer Correct Answer: D) Solid. 6. A solid composed of atoms, ions or molecules arranged in a pattern that is periodic in three dimensions. A) Crystal. B) Unit cell. C) Alloy. D) None of above. Show Answer Correct Answer: A) Crystal. 7. Identifies what substances are present in materials and how much of each substance is present. A) Physical chemistry. B) Organic chemistry. C) Biochemistry. D) Inorganic chemistry. E) Analytical chemistry. Show Answer Correct Answer: E) Analytical chemistry. 8. Which statement explains why the reactivity of Group 1 elements increase when going down the group? A) The melting point of the elements decreases. B) The valence electrons gets further away from the nucleus. C) The attractive force between valence electron and the nucleus becomes stronger. D) The physical state of the elements changes from gas to liquid then to solid at room temperature. Show Answer Correct Answer: B) The valence electrons gets further away from the nucleus. 9. Atoms are ..... when they are combined. A) At high potential energy. B) Not bound together. C) Less stable. D) More stable. Show Answer Correct Answer: D) More stable. 10. A person with hypothermia has a body temperature of 34.8 $^ \circ$C. What is that temperature in degrees Fahrenheit? A) 95.3 $^ \circ$F. B) 95.6 $^ \circ$F. C) 94.6 $^ \circ$F. D) 94.3 $^ \circ$F. Show Answer Correct Answer: C) 94.6 $^ \circ$F. 11. Atomic number = ..... A) No. of protons. B) No. of neutrons. C) Protons + Neutrons. D) None of above. Show Answer Correct Answer: A) No. of protons. 12. Which of the following is a heterogeneous mixture? A) A water sample containing dissolved salt. B) An air sample of oxygen, nitrogen, and carbon dioxide. C) A glass jar containing sand and different sized rocks. D) An iron-carbon alloy used to produce steel. Show Answer Correct Answer: C) A glass jar containing sand and different sized rocks. 13. What properties that do not depend on the amount of the matter present A) Density. B) Intensive. C) Volume. D) Extensive. Show Answer Correct Answer: B) Intensive. 14. Which organic molecule is not a structural isomer of pentan-1-ol? A) Pentan-3-ol. B) 2-methylbutan-2-ol. C) Pentan-2-ol. D) 2-methylpentan-2-ol. Show Answer Correct Answer: D) 2-methylpentan-2-ol. 15. A measure of how much matter an object has is ..... A) Mass. B) Gravity. C) Weight. D) Volume. Show Answer Correct Answer: A) Mass. 16. Which state of matter has the highest amount of kinetic energy? A) Solid. B) Liquid. C) Gas. D) None of above. Show Answer Correct Answer: C) Gas. 17. Studying the process of photosynthesis in plants. A) Analytical. B) Theoretical chemistry. C) Inorganic. D) Biochemistry. Show Answer Correct Answer: D) Biochemistry. 18. The subatomic particle that determines the identity of an element. A) Proton. B) Electron. C) Neutron. D) Outer shell. Show Answer Correct Answer: A) Proton. 19. A research team intends to find out why a lake remains polluted to try to find a way to clean it up A) Basic research. B) Applied research. C) Technological research. D) None of above. Show Answer Correct Answer: B) Applied research. 20. Calculating and finding out how much nitrogen is in a sample of air is which study A) Organic. B) Inorganic. C) Physical. D) Analytical. Show Answer Correct Answer: D) Analytical. 21. In the chemical reaction iron plus oxygen $\rightarrow$ iron oxide, A) Iron oxide is a reactant. B) Oxygen is a product. C) Iron is a product. D) Iron is a reactant. Show Answer Correct Answer: D) Iron is a reactant. 22. When a covalent bond forms ..... are shared. A) Nutrons. B) Protons. C) Quarks. D) Valence electrons. Show Answer Correct Answer: D) Valence electrons. 23. Atom T has a proton number of 11 and a nucleon number of 23. Which of the following is true about element T? A) If forms an oxide with the formula TO. B) It reacts with water to form an alkaline solution. C) It does not conduct electricity. D) It is a hard black solid. Show Answer Correct Answer: B) It reacts with water to form an alkaline solution. 24. "C" is the element symbol for which element? A) Cadmium. B) Carbon. C) Chlorine. D) Calcium. Show Answer Correct Answer: B) Carbon. 25. ..... are some functions of lipids. A) Storing energy and cell membrane structure. B) Providing actin & providing myosin. C) Cellulose structure and digestive assistance. D) Storing & transferring genetic info. Show Answer Correct Answer: A) Storing energy and cell membrane structure. 26. Study the process that takes place in organisms. A) Chemistry. B) Analytical Chemistry. C) Physical Chemistry. D) Biochemistry. Show Answer Correct Answer: D) Biochemistry. 27. Describe an Electron Cloud? A) Home of the protons. B) Where electrons are located. C) The mist outside of an atom. D) Nucleus. Show Answer Correct Answer: B) Where electrons are located. 28. Cm3 of 0.4 mol dm-3 sodium hydroxide solution, NaOH that is filled into a conical flask is titrated with 1.0 mol dm-3 of sulphuric acid, H2SO4. Determine the final volume of solution in the conical flask. A) 10.0 cm3. B) 70.0 cm3. C) 60.0 cm3. D) 100.0 cm3. Show Answer Correct Answer: C) 60.0 cm3. 29. Which is the unit that measures mass? A) Inches. B) Grams. C) Liters. D) Pounds. Show Answer Correct Answer: B) Grams. 30. Write the chemical name for the following compound Fe3+ and O2- A) Triiron oxide. B) Iron (II) oxide. C) Iron (III) oxide. D) Iron Oxide. Show Answer Correct Answer: C) Iron (III) oxide. 31. What would be the products of hydrolysis of a fat? A) Glycerol. B) Fatty acids. C) Glycerol and esters. D) Glycerol and fatty acids. Show Answer Correct Answer: D) Glycerol and fatty acids. 32. What happens to the pH of a acid during neutralisation? A) It moves up towards pH 7. B) It stays the same. C) It lowers. D) It moves down to pH 1. Show Answer Correct Answer: A) It moves up towards pH 7. 33. One of Dalton's conclusions concerning his atomic theory was that all atoms of the same element are- A) The same. B) Reacted. C) Combined. D) Different. Show Answer Correct Answer: A) The same. 34. What is the definition of an atom? A) The smallest part of any substance which can exist on its own. B) Two or more atoms chemically joined together (can be the same or can be different). C) A simple substance in which all the atoms are identical. D) Two or more different elements chemically joined together. Show Answer Correct Answer: A) The smallest part of any substance which can exist on its own. 35. The periodic table is arranged by A) Mass number. B) Atomic mass. C) Atomic number. D) Properties. Show Answer Correct Answer: C) Atomic number. 36. How many moles are in 16.94g of water? A) 305.2. B) 16.94. C) 0.9403. D) 1.063. Show Answer Correct Answer: C) 0.9403. 37. Why does ice float? A) The density gets larger due to the formation of a crystalline structure. B) The density get smaller due to the formation of a crystalline structure. C) The liquid water's force pushes the ice to the top. D) The covalents bonds are in random order causing the density to lower. Show Answer Correct Answer: B) The density get smaller due to the formation of a crystalline structure. 38. Simple sugars, or monosaccharides, such as glucose are the building blocks of A) Carbohydrates. B) Nucleic acids. C) Lipids. D) Proteins. Show Answer Correct Answer: A) Carbohydrates. 39. The chemistry of living things A) Biochemistry. B) Organic chemistry. C) Inorganic chemistry. D) Analytical chemistry. E) Physical chemistry. Show Answer Correct Answer: A) Biochemistry. 40. Which order is correct when the following substances are arranged in order of increasing boiling point? A) CH3CH3 < CH3CH2OH < CH3CHO. B) CH3CH2OH < CH3CH3 < CH3CHO. C) CH3CHO < CH3CH2OH < CH3CH3. D) CH3CH3 < CH3CHO < CH3CH2OH. Show Answer Correct Answer: D) CH3CH3 < CH3CHO < CH3CH2OH. 41. Wastes may be produced when: A) A product is made. B) A product is thrown away. C) A product is used. D) All of the above. Show Answer Correct Answer: D) All of the above. 42. A saturated solution is ..... A) No more solute can be dissolved. B) More solute can be dissolved. C) The solvent and solution. D) None of above. Show Answer Correct Answer: A) No more solute can be dissolved. 43. What elements generally make an ionic bond? A) Metal and nonmetal. B) 2 nonmetals. C) Metal. D) None of the above. Show Answer Correct Answer: A) Metal and nonmetal. 44. Two atoms of the same element but with different mass numbers are called ..... A) Electrons. B) Variables. C) Isotopes. D) Electron cloud. Show Answer Correct Answer: C) Isotopes. 45. Water has ..... molecular shape. A) Linear. B) Bent. C) Planar. D) Pyrimidal. Show Answer Correct Answer: B) Bent. 46. Which substance is soluble in water? A) Sand. B) Gravel. C) Salt. D) Wood shavings. Show Answer Correct Answer: C) Salt. 47. An atom has 5 protons, 7 neutrons and 5 electrons. What is the mass number of the atom? A) 12. B) 7. C) 2. D) 5. Show Answer Correct Answer: A) 12. 48. Which type of reaction will feel cold? A) Exothermic. B) Exergonic. C) Endothermic. D) None of these. Show Answer Correct Answer: C) Endothermic. 49. C12H22O11 how many many elements? A) 45. B) 2. C) 3. D) None, it's a compound. Show Answer Correct Answer: C) 3. 50. Mrs. Franklin ismaking chocolate suckers for the class. She takes blocks of chocolate and heatsthem over a fire. The melting chocolate is an example of a- A) Graphic change. B) Physical change. C) Chemical change. D) Reactional change. Show Answer Correct Answer: B) Physical change. 51. Which chemical equation represents a neutralisation reaction? A) Mg + H2SO4 $\rightarrow$ MgSO4 + H2. B) 2HCl + CaCO3 $\rightarrow$ CaCl2 + CO2 + H2O. C) ZnCl2 + 2HNO3 $\rightarrow$ Zn(NO3)2 + 2HCl. D) NaOH + CH3COOH $\rightarrow$ CH3COONa + H2O. Show Answer Correct Answer: D) NaOH + CH3COOH $\rightarrow$ CH3COONa + H2O. 52. Which salt is not decomposed when heated strongly? A) Zinc nitrate. B) Copper(II) sulphate. C) Ammonium chloride. D) Potassium carbonate. Show Answer Correct Answer: D) Potassium carbonate. 53. Who created the periodic table A) Mendeleev. B) Diamond. C) Einstein. D) None of above. Show Answer Correct Answer: A) Mendeleev. 54. In this type of bond electrons are shared by two non-metals A) Ionic. B) Covalent. C) Subatomic. D) None of above. Show Answer Correct Answer: B) Covalent. 55. Measure of the amount of matter A) Weight. B) Density. C) Volume. D) Mass. Show Answer Correct Answer: D) Mass. 56. How can mixtures best be described? A) Made of one element. B) Made of different elements that are all chemically bonded together. C) Made of different elements that are not all chemically bonded together. D) Made of substances that are chemically reactive. Show Answer Correct Answer: C) Made of different elements that are not all chemically bonded together. 57. What is a liquid? A) A substance that flows freely but is of constant volume. B) A substance or matter in a state in which it will expand freely. C) Firm and stable in shape. D) None of above. Show Answer Correct Answer: A) A substance that flows freely but is of constant volume. 58. Rows on the period table are called ..... while columns are called ..... A) Groups, families. B) Families, groups. C) Periods, groups. D) Groups, periods. Show Answer Correct Answer: C) Periods, groups. 59. An intensive property that refers to the measure of the resistance of a mineral to scratching. A) Length. B) Volume. C) Luster. D) Hardness. Show Answer Correct Answer: D) Hardness. 60. Which is NOT a chemical change? A) Leaves changing colors in the fall. B) Iron rusting. C) Digesting Lunch. D) Ice Melting. Show Answer Correct Answer: D) Ice Melting. ← PreviousNext →Related QuizzesChemistry QuizzesScience 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