This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry – Quiz 32 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 32 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Wood burning is an example of ..... A) Physical intensive property. B) Physical extensive property. C) Chemical change. D) Physical change. Show Answer Correct Answer: C) Chemical change. 2. If an atom contains 4 protons, 4 neutrons, and 4 electrons. What is its mass number? A) 4. B) 8. C) 2. D) 16. Show Answer Correct Answer: B) 8. 3. Substances composed of two or more elements chemically combined in a fixed proportion. A) Element. B) Compound. C) Vapor. D) Mixture. Show Answer Correct Answer: B) Compound. 4. What is the correct name of the compound Mg(NO3)2? A) Magnesium nitride. B) Magnesium dinitrate. C) Monomagnesium dinitrate. D) Magnesium nitrate. Show Answer Correct Answer: D) Magnesium nitrate. 5. Propene is converted to propanone in a two stage process.Propene $\rightarrow$ X $\rightarrow$ PropanoneWhat is the formula of compound X? A) CH3CHBrCH3. B) CH3CH2CH2Br. C) CH3CHOHCH3. D) CH3CH2CH2OH. Show Answer Correct Answer: C) CH3CHOHCH3. 6. What is the molar mass of sodium? A) 11. B) 22.990. C) 45.98. D) 3. Show Answer Correct Answer: B) 22.990. 7. The valency of Chlorine in AlCl3 is A) 1. B) 3. C) 2. D) None of above. Show Answer Correct Answer: A) 1. 8. An electrophile is a Lewis ..... A) Base. B) Acid. C) Radical. D) Anion. Show Answer Correct Answer: B) Acid. 9. Bases, like soap, are ..... A) Sour. B) Slippery. C) Non-electrical. D) Carbon. Show Answer Correct Answer: B) Slippery. 10. The activation energy needed for a chemical reaction is decreased by a A) Catalyst. B) Reactant. C) Product. D) Substrate. Show Answer Correct Answer: A) Catalyst. 11. What is the value of x $ Cl^{-1}X$ A) 0. B) 4. C) 100000000000000000000000000. D) 1. Show Answer Correct Answer: D) 1. 12. An element is made up of only one kind of ..... A) Isotope. B) Plastic. C) Atom. D) Metal. Show Answer Correct Answer: C) Atom. 13. What is the difference between ionic and covalent bonding? A) Ionic bonds share electrons, covalent bonds transfer electrons. B) Covalent bonds share electrons, ionic bonds transfer electrons. C) Only ionic bonds can make double bonds. D) Only ionic bonds can be polar. Show Answer Correct Answer: B) Covalent bonds share electrons, ionic bonds transfer electrons. 14. Pure oxygen (O) is an example of ..... A) An element. B) A mixture. C) A compound. D) None of above. Show Answer Correct Answer: A) An element. 15. The rule that refers to polar molecules dissolving polar and nonpolar dissolving nonpolar is A) This dissolves that. B) Like dissolves like. C) Same dissolves same. D) Here dissolves there. Show Answer Correct Answer: B) Like dissolves like. 16. Subatomic particle that determines the identity of the atom A) Proton. B) Nucleus. C) Electron. D) Neutron. Show Answer Correct Answer: A) Proton. 17. A(n) ..... increases the reaction rate by lowering the activation energy needed. A) Catalyst. B) Energy. C) Activation energy. D) Decomposition. E) Chemical changes. Show Answer Correct Answer: A) Catalyst. 18. The four main types of carbon-based molecules in organisms are carbohydrates, lipids, nucleic acids, and A) Starches. B) Fatty acids. C) Monosaccharides. D) Proteins. Show Answer Correct Answer: D) Proteins. 19. The number of atoms, ions or molecules that a central atom or ion holds as its nearest neighbors in a complex or a coordination compound or in a crystal. A) Coordination number. B) Ligancy. C) Coordination. D) None of above. Show Answer Correct Answer: A) Coordination number. 20. What is the correct name for the following compound? HClO3 A) Hydrogen chloroxide. B) Chloric acid. C) Hydrogen trichlorate. D) Hypochlorite. Show Answer Correct Answer: B) Chloric acid. ← 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