This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry – Quiz 29 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 29 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Solid, liquid and gas are examples of? A) Phases. B) Temperature. C) Scale. D) Refute. Show Answer Correct Answer: A) Phases. 2. An ..... does not allow electricity or heat to flow through it easily. A) Combustion. B) Conductor. C) Insulator. D) Luster. Show Answer Correct Answer: C) Insulator. 3. Which particle has a positive charge? A) Electron. B) Orbital. C) Proton. D) Neutron. Show Answer Correct Answer: C) Proton. 4. What year was the periodic table made? A) 1986. B) 1869. C) 1932. D) 1847. Show Answer Correct Answer: B) 1869. 5. Air, water, glass and antacid tablets are (#####) A) Homogeneous. B) Heterogeneous. C) Metric system. D) Matter. Show Answer Correct Answer: D) Matter. 6. A change in matter in which the substances that make up the matter change into other substances with different chemical and physical properties A) Physical change. B) Physical property. C) Chemical change. D) Chemical property. Show Answer Correct Answer: C) Chemical change. 7. How many valence electrons do elements in Group 2A have? A) 12. B) 4. C) 1. D) 2. Show Answer Correct Answer: D) 2. 8. The chemical equation shows the reaction between excess sulphuric acid solution with sodium hydroxide solution.2NaOH (aq) + H2SO4 (aq) $\rightarrow$ Na2SO4 (aq) + 2H2O12.5 cm3 of 0.5 mol dm-3 sulphuric acid solution neutralises 50 cm3 of sodium hydroxide. Determine the concentration of the sodium hydroxide solution. A) 0.10 mol dm-3. B) 0.20 mol dm-3. C) 0.25 mol dm-3. D) 0.50 mol dm-3. Show Answer Correct Answer: C) 0.25 mol dm-3. 9. Process from liquid to solid. A) Freezing. B) Deposition. C) Evaporation. D) Melting. Show Answer Correct Answer: A) Freezing. 10. Mixture, such as mixed nuts or dry soup mix, in which different materials are unevenly distributed and are easily identified. A) Suspension. B) Homogeneous mixture. C) Heterogeneous mixture. D) Colloid. Show Answer Correct Answer: C) Heterogeneous mixture. 11. Substance formed in a chemical reaction A) Reactant. B) Product. C) Compound. D) Molecule. Show Answer Correct Answer: B) Product. 12. Bonds between atoms in a molecule form as a result of the sharing or exchanging of ..... electrons. A) Charged. B) Valence. C) Innermost. D) Ionic. Show Answer Correct Answer: B) Valence. 13. Fats are immiscible in water because ..... A) Water is polar and fats are polar. B) Water is polar and fats are non polar. C) Water is non polar and fats are polar. D) None of above. Show Answer Correct Answer: B) Water is polar and fats are non polar. 14. On the Periodic Table each element increases by one ..... A) Electron. B) Proton. C) Neutron. D) Letter. Show Answer Correct Answer: B) Proton. 15. Unsaturated fats such as oils can be hardened by which type of reaction? A) Addition. B) Hydrolysis. C) Condensation. D) None of above. Show Answer Correct Answer: A) Addition. 16. Propanitrile can be prepared by reacting bromoethane with potassium cyanide. Which statement is not correct about the reaction between bromoethane and potassium cyanide? A) The reaction is bi-molecular. B) The reaction follows the SN2 mechanism. C) Homolytic fission occurs between the carbon-bromine bond in bromoethane. D) The cyanide ion, :CN-, acts as a nucleophile. Show Answer Correct Answer: C) Homolytic fission occurs between the carbon-bromine bond in bromoethane. 17. Elements that have properties of both metals and nonmetals. A) Inner transition. B) Representative elements. C) Transition. D) Metalloids. Show Answer Correct Answer: D) Metalloids. 18. Why are LDLs (Low-Density Lipoproteins) considered "losers" A) They are found in every fatty food. B) They transport excess cholesterol back to liver. C) They transport excess cholesterol to arteries. D) They are processed through the body very slowly. Show Answer Correct Answer: C) They transport excess cholesterol to arteries. 19. Which two particles would you find in the nucleus of an atom? A) Electrons and Ions. B) Electrons and Neutrons. C) Protons and Electrons. D) Protons and Neutrons. Show Answer Correct Answer: D) Protons and Neutrons. 20. An ion that has a positive charge. A) Cation. B) Anion. C) Oxyanion. D) Monoatomic ion. Show Answer Correct Answer: A) Cation. ← 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