This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry Basics > Chemistry – Quiz 31 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 31 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. 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. 2. 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. 3. On the Periodic Table each element increases by one ..... A) Electron. B) Proton. C) Neutron. D) Letter. Show Answer Correct Answer: B) Proton. 4. 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. 5. 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. 6. 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. 7. 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. 8. 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. 9. An ion that has a positive charge. A) Cation. B) Anion. C) Oxyanion. D) Monoatomic ion. Show Answer Correct Answer: A) Cation. 10. Which of the following symbols represents a compound? A) Co. B) Br. C) Fe. D) CO. Show Answer Correct Answer: D) CO. 11. What are the two main categories of elements onthe periodic table? A) Alloys or metals. B) Metals and nonmetals. C) Solutions and compounds. D) Pure substances and mixtures. Show Answer Correct Answer: B) Metals and nonmetals. 12. Why are HDLS (High-Density Lipoproteins) considered the "heroes" ? A) They transport excess cholesterol back to liver. B) They transport excess cholesterol to arteries. C) They are processed through the body very quickly. D) They are found in every fatty food. Show Answer Correct Answer: A) They transport excess cholesterol back to liver. 13. Solution where more solute can still be dissolved at the given temperature. A) Saturated. B) Unsaturated. C) Supersaturated. D) Homogeneous solution. Show Answer Correct Answer: B) Unsaturated. 14. What is unique about carbon? A) Bonding properties. B) Ability to bond with oxygen. C) Properties as a reactant. D) Properties as an enzyme. Show Answer Correct Answer: A) Bonding properties. 15. Whenobserving a salad with lettuce, carrots, radishes, and cucumbers, a studentcorrectly classified it as which of the following? A) An element. B) A compound. C) A homogeneous mixture. D) A heterogeneous mixture. Show Answer Correct Answer: D) A heterogeneous mixture. 16. The smallest building block of all matter in the universe. A) Atom. B) Matter. C) Proton. D) Element. Show Answer Correct Answer: A) Atom. 17. Which correctly lists elements? A) S2Fe, Al, Sr, O. B) C, Fe, Al, Sr. C) H2o, C, Al, S. D) C, fe, al, sr. Show Answer Correct Answer: B) C, Fe, Al, Sr. 18. Measure of the space occupied by an object. A) Volume. B) Mass. C) Matter. D) Solid. Show Answer Correct Answer: A) Volume. 19. What is the correct chemical formula for strontium acetate? A) SrC2H3O2. B) Sr2C2H3O2. C) Sr(C2H3O2)2. D) Sr(C2H3O2)3. Show Answer Correct Answer: C) Sr(C2H3O2)2. 20. Which state of matter has a fixed shape and volume and it's molecules move very slowly? A) Liquid. B) Gas. C) Solid. D) Plasma. Show Answer Correct Answer: C) Solid. ← 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