This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Chemistry > Chemistry – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 10 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The Chemical Symbol of Sodium is A) So. B) Na. C) Br. D) Sd. Show Answer Correct Answer: A) So. 2. What is the CORRECT formula of ammonium sulfide? A) NH4SO3. B) (NH4)2SO4. C) (NH4)2S. D) NH3S. Show Answer Correct Answer: C) (NH4)2S. 3. If the atomic number is 10 and the atomic mass is 23.10, how neutrons does that atom have? A) 23. B) 23.10. C) 13. D) 10. Show Answer Correct Answer: C) 13. 4. The oil used in the froth floatation process is A) Coconut oil. B) Olive oil. C) Kerosene oil. D) Pine oil. Show Answer Correct Answer: D) Pine oil. 5. Which biomolecule contain your genetics? A) Nucleic Acid. B) Carbohydrate. C) Lipid. D) Protein. Show Answer Correct Answer: A) Nucleic Acid. 6. One difference between carbon-12 and carbon-14 is that carbon-14 has A) Two more protons than carbon-12. B) Two more electrons than carbon-12. C) Two more neutrons than carbon-12. D) A and C only B and C only. Show Answer Correct Answer: C) Two more neutrons than carbon-12. 7. Which combination of temperature and pressure correctly describes standard temperature and pressure, STP? A) 0C$^ \circ$ and 101.3 kPa. B) 1C$^ \circ$ and 0 kPa. C) 0C$^ \circ$ and 22.4 kPa. D) 100C$^ \circ$ and 100 kPa. Show Answer Correct Answer: A) 0C$^ \circ$ and 101.3 kPa. 8. What element is located in group 2, period 3? A) Be. B) Sc. C) Mg. D) Na. Show Answer Correct Answer: C) Mg. 9. A molecule of H2, S, O4 contains how many atoms? A) 3. B) 6. C) 7. D) 8. Show Answer Correct Answer: C) 7. 10. The substance that does the dissolving A) Solute. B) Miscibility. C) Solvent. D) Solution. Show Answer Correct Answer: C) Solvent. 11. If an atom has 12 positively charged subatomic particles, which of the following must it also have to be considered a neutral atom? A) 12 neutrons. B) 12 electrons. C) 12 protons. D) 24 protons and neutrons. Show Answer Correct Answer: B) 12 electrons. 12. The number of significant figures in the measurement 170.040 km is A) Five. B) Three. C) Four. D) Six. Show Answer Correct Answer: D) Six. 13. A magnesium atom has an atomic number of 12, a mass number of 25, and a +2 charge. This atom would contain ..... protons, ..... neutrons, and ..... electrons. A) 12; 25; 2. B) 12; 13; 14. C) 12; 13; 10. D) None of above. Show Answer Correct Answer: C) 12; 13; 10. 14. How many oxygen atoms are in the compound C3H5(OH)3 A) 5. B) 6. C) 3. D) 2. Show Answer Correct Answer: C) 3. 15. Which of these is an ionic compound? A) Li2O. B) H2O. C) Hg. D) O2. Show Answer Correct Answer: A) Li2O. 16. An-ate or-ite at the end of a compound name usually indicates that the compound contains ..... A) Neutral molecules. B) A polyatomic anion. C) Fewer electrons than protons. D) Only two elements. Show Answer Correct Answer: B) A polyatomic anion. 17. Matter is made up of tiny indestructible particles called A) Proton. B) Atom. C) Molecules. D) None of above. Show Answer Correct Answer: B) Atom. 18. Which of the following tells you that a chemical change has occured? A) Change in color. B) Change in shape. C) Vaporizing. D) Melting. Show Answer Correct Answer: A) Change in color. 19. What is the atomic mass for the element Dy? A) 165. B) 66. C) 229. D) 163. Show Answer Correct Answer: D) 163. 20. The gaseous state of a substance which is normally a solid or liquid is a A) Phase. B) Vapor. C) Plasma. D) Gas. Show Answer Correct Answer: B) Vapor. 21. Hydrocarbons are compound that contain A) Carbon only. B) Carbon, Oxygen, and Hydrogen only. C) Carbon and Hydrogen only. D) Carbon, Oxygen, and Nitrogen. Show Answer Correct Answer: C) Carbon and Hydrogen only. 22. A definite shape and volume A) Solid. B) Liquid. C) Gas. D) None of above. Show Answer Correct Answer: A) Solid. 23. Gold is an example of a(n) A) Pure element. B) Pure compound. C) Pure mixture. D) None of above. Show Answer Correct Answer: A) Pure element. 24. Which pair of substances is miscible? A) Water (liquid) and vinegar (liquid). B) Ethanol (and alcohol) and sodium chloride (solid). C) Water and sodium chloride (solid). D) Oil and water. Show Answer Correct Answer: A) Water (liquid) and vinegar (liquid). 25. The formula CO represents one ..... of carbon monoxide. A) Atom. B) Molecule. C) Ion. D) Isotope. Show Answer Correct Answer: B) Molecule. 26. A change in which the atoms or molecules in a substance stay the same A) Chemical Change. B) Matter. C) Physical Change. D) Mixture. Show Answer Correct Answer: C) Physical Change. 27. What is the mass of .75 mol of sulfur, which has a molar mass of 32 g/mol. A) 240. B) 32. C) 24. D) 16. Show Answer Correct Answer: C) 24. 28. Atoms that have the same number of protons but different numbers of neutrons. A) Neutron. B) Atomic Mass. C) Proton. D) Isotopes. Show Answer Correct Answer: D) Isotopes. 29. Who formulates the law of conservation of mass? A) Antoine-Laurent Lavoisier. B) John Dalton. C) Joseph Priestly. D) Joseph-Louis Proust. Show Answer Correct Answer: A) Antoine-Laurent Lavoisier. 30. Which ONE of the following is a physical change? A) Melting ice. B) Rusting iron. C) Rotting food. D) Burning wood. Show Answer Correct Answer: A) Melting ice. 31. The number written in front of a chemical symbol or formula A) Coefficient. B) Atomic number. C) Valence number. D) Subscript. Show Answer Correct Answer: A) Coefficient. 32. Describes a molecule containing carbon and hydrogen together (usually along with others) A) Inorganic. B) Organic. C) Disorganic. D) Monorganic. Show Answer Correct Answer: B) Organic. 33. Permanent hardness of water is due to the presence of? A) Calcium sulphate. B) Magnesium bicarbonate. C) Calcium bicarbonate. D) Sodium bicarbonate. Show Answer Correct Answer: A) Calcium sulphate. 34. Which statement of an elements average atomic mass is correct A) Is a weighted average. B) Equal to 1/12 the mass of the most common isotope. C) Determined by counting the number of isotopes in a sample of the element. D) Based on isotopes charge. Show Answer Correct Answer: A) Is a weighted average. 35. ..... is the amount that has to be paid to buy something. A) Science. B) Composition. C) Cost. D) Consumer products. Show Answer Correct Answer: C) Cost. 36. Where are the non-metals located on the periodic table A) Left/ Middle. B) Right. C) Staircase. D) None of above. Show Answer Correct Answer: B) Right. 37. A monomer is ..... A) A building block for polymers. B) Is an inorganic molecule. C) A single element. D) A single atom. Show Answer Correct Answer: A) A building block for polymers. 38. Group 18 noble gases are inert because A) Outermost energy level is missing one electron. B) Have either a positive or negative charge. C) Outermost energy level is full. D) Readily form positive ions. Show Answer Correct Answer: C) Outermost energy level is full. 39. Ability of carbon atom to bond with other carbons to form a chain of endless variety. A) Cantilever. B) Canteen sa PLV. C) Cantelation. D) Catenation. Show Answer Correct Answer: D) Catenation. 40. How many water molecules are in 5.2 moles of water? A) 6.02 x 1023. B) 8.638 x 10-24. C) 5.2. D) 3.1 x 1024. Show Answer Correct Answer: D) 3.1 x 1024. 41. How many total electrons does O-2 (an oxide ion) have? A) 6. B) 10. C) 8. D) 18. Show Answer Correct Answer: B) 10. 42. Select the chemical symbols for the following elements in the correct orderHelium, Lithium, Florine, Carbon, Potassium, Phosphorus A) He, Li, F, C, P, K. B) He, Li, F, C, K, P. C) H, L, F, C, Po, P. D) H, Li, F, Ca, P, Po. Show Answer Correct Answer: B) He, Li, F, C, K, P. 43. You have 85.5 g of fluorine, which has a molar mass of 19 g/mol. how many mols of fluorine do you have? A) 4.5 mol. B) 45 mol. C) 19 mol. D) 85 mol. Show Answer Correct Answer: A) 4.5 mol. 44. Silicon (Si) has ..... shells A) 5. B) 4. C) 3. D) 6. Show Answer Correct Answer: C) 3. 45. Valence electrons are A) Electrons farthest away from the nucleus. B) Electrons closest to the nucleus. C) Electrons that just come and go-they don't stay with the atom. D) None of above. Show Answer Correct Answer: A) Electrons farthest away from the nucleus. 46. Anything which takes up space and has mass is A) Density. B) A substance. C) Matter. D) Volume. Show Answer Correct Answer: C) Matter. 47. What is the relative mass of a proton? A) 1 amu. B) 1/1840 amu. C) 9.11 x 10-28 g. D) 1.675 x 10-24 g. Show Answer Correct Answer: A) 1 amu. 48. The trace element that helps maintain the shape of some proteins by forming bonds is A) Sulfur. B) Sodium. C) Cobalt. D) Iron. Show Answer Correct Answer: A) Sulfur. 49. This is one job proteins do NOT have in the body A) Transport things through cell membrane. B) Structure. C) Speed up chemical reactions. D) Storing genetic information. Show Answer Correct Answer: D) Storing genetic information. 50. Starting Materials of a chemical reaction A) Coefficients. B) Products. C) Reactants. D) Moles. Show Answer Correct Answer: C) Reactants. 51. Suppose you have a glass of unknown liquid that you want to identify. It looks like milk, but you cannot be sure. How could it be determined? A) Taste the unknown liquid. B) Smell the unknown liquid. C) Guess the unknown liquid. D) None of the above. Show Answer Correct Answer: C) Guess the unknown liquid. 52. Which scientist described the existence of the neutron? A) Chadwick. B) Rutherford. C) Bohr. D) Thomson. Show Answer Correct Answer: A) Chadwick. 53. Connection between two atoms created when valence electrons are shared A) Hydrogen bond. B) Covalent bond. C) James bond. D) Ionic bond. Show Answer Correct Answer: B) Covalent bond. 54. What is the mole ratio in the following reaction:2CO + O2 $\rightarrow$ 2CO2 A) Have no clue what a mole ratios is!!. B) 2:1:2. C) 1:1:1. D) 1:2:1. Show Answer Correct Answer: B) 2:1:2. 55. The solute that falls out of a solution (like rain) A) Precipitate. B) Water. C) Ice. D) Water vapor. Show Answer Correct Answer: A) Precipitate. 56. How much stronger is a substance with a pH of 2 when compared to substance with a pH of 5? A) 10x. B) 100x. C) 1000x. D) 10, 000x. Show Answer Correct Answer: C) 1000x. 57. Which of the following is best classified as a homogeneous mixture? A) Copper wire. B) Hot tea. C) Pizza. D) Blood. Show Answer Correct Answer: B) Hot tea. 58. In the Lewis dot structure of Barium (Ba) this is how many dots you will draw A) 6. B) 2. C) 56. D) 11. Show Answer Correct Answer: B) 2. 59. Which biomolecule contains fats, oils, and waxes? A) Carbohydrate. B) Nucleic Acid. C) Lipids. D) Proteins. Show Answer Correct Answer: C) Lipids. 60. The horizontal rows of the periodic table are called A) Families. B) Columns. C) Groups. D) Periods. Show Answer Correct Answer: D) Periods. ← 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