This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry – Quiz 59 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 59 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the choices below states the Law of conservation of mass? A) Mass of reactants = mass of products. B) Mass of reactants > mass of products. C) Mass of reactants< mass of products. D) Mass of reactants = 2 x mass of reactants. Show Answer Correct Answer: A) Mass of reactants = mass of products. 2. Which of the following is a pure substance? A) Air. B) Granite. C) Water. D) Stainless steel. Show Answer Correct Answer: C) Water. 3. Which element found in all organic compounds? A) Carbon. B) Calcium. C) Nitrogen. D) None of them. Show Answer Correct Answer: A) Carbon. 4. What is colorimeter? A) Instrument. B) Model. C) Process. D) Nothing. Show Answer Correct Answer: A) Instrument. 5. Which of the following will have a higher electronegativity than arsenic (As)? A) Carbon (C). B) Neon (Ne). C) Antimony (Sb). D) Germanium (Ge). Show Answer Correct Answer: A) Carbon (C). 6. What causes an atom to be charged? A) Gain or loss of electrons. B) Gain or loss of protons. C) Gain or loss of neutrons. D) None of above. Show Answer Correct Answer: A) Gain or loss of electrons. 7. Which of the following is not an element found in large abundance in organisms? A) Calcium. B) Carbon. C) Hydrogen. D) Nitrogen. Show Answer Correct Answer: A) Calcium. 8. Which of the following anions is polyatomic? A) Iodide. B) Sulfide. C) Nitrite. D) Bromide. Show Answer Correct Answer: C) Nitrite. 9. Which of following are storage polysaccharides? A) Starch and glucose. B) Chitin and cellulose. C) Starch and glycogen. D) Chitin and glycogen. Show Answer Correct Answer: C) Starch and glycogen. 10. Which subatomic particle is positive? A) Electron. B) Proton. C) Neutron. D) Quark. Show Answer Correct Answer: B) Proton. 11. The positive particles of an atom are A) Electrons. B) Positrons. C) Neutrons. D) Protons. Show Answer Correct Answer: D) Protons. 12. Which of these shows SI unit prefixes arranged in order from smallest to largest? A) Centi, milli, kilo. B) Milli, centi, kilo. C) Kilo, milli, centi. D) Kilo, centi, milli. Show Answer Correct Answer: B) Milli, centi, kilo. 13. It is a substance that the pressure exerted by its vapor when in equilibrium with its liquid or solid. A) Vapor pressure. B) Boiling point. C) Viscosity. D) Heat of vaporization. Show Answer Correct Answer: A) Vapor pressure. 14. What is the mass number? A) The number of protons. B) The number of protons and neutrons. C) The number of neutrons. D) The number of protons and electrons. Show Answer Correct Answer: B) The number of protons and neutrons. 15. What type of particle is:NO2 A) Atom. B) Molecule. C) Formula Unit. D) Ion. Show Answer Correct Answer: B) Molecule. 16. Why do elements bond? A) To fill their outer shell. B) They like electrons. C) To exchange protons. D) None of above. Show Answer Correct Answer: A) To fill their outer shell. 17. Typically, when two atoms form a chemical bond, the expected result is that the electrons A) Will be in the excited state. B) Will be completely removed from both atoms. C) Will complete a noble gas configuration for both atoms. D) All of the choices. Show Answer Correct Answer: C) Will complete a noble gas configuration for both atoms. 18. It resist an external force and this assume a lesser surface area. A) Viscosity. B) Heat of vaporization. C) Surface tension. D) Boiling point. Show Answer Correct Answer: C) Surface tension. 19. If 60.2 grams of Hg combines completely with 24.0 grams of Br to form a compound, what is the percent composition of Hg in the compound? A) 28.5%. B) 39.9%. C) 71.5%. D) 60.1%. Show Answer Correct Answer: C) 71.5%. 20. Which of the following is NOT true about water? A) Water can moderate temperatures. B) Water does not dissolve many substances. C) Water can climb against gravity. D) Water can adhere to other substance. Show Answer Correct Answer: B) Water does not dissolve many substances. ← PreviousNext →Related QuizzesScience QuizzesChemistry Quiz 1Chemistry Quiz 2Chemistry Quiz 3Chemistry Quiz 4Chemistry Quiz 5Chemistry Quiz 6Chemistry Quiz 7Chemistry Quiz 8Chemistry Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books