This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry – Quiz 24 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 24 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Your bicycle stayed outside during last week'srain. Then you noticed rust forming onsome of the shiny metal parts. What typeof change has occurred? A) Chemical. B) Endothermic. C) Physical. D) Tarnishing. Show Answer Correct Answer: A) Chemical. 2. What is surface tension? A) The inward force that maximizes the surface area of a liquid. B) The outward force that maximizes the surface area of a liquid. C) The outward force that minimizes the surface area of a liquid. D) The inward force that minimizes the surface area of a liquid. Show Answer Correct Answer: D) The inward force that minimizes the surface area of a liquid. 3. Only two sides are equal and all have equal angles (90$^ \circ$) A) Cubic. B) Tetragonal. C) Orthorhombic. D) None of above. Show Answer Correct Answer: B) Tetragonal. 4. Which statements about substitution reactions are correct? I. The reaction between sodium hydroxide and 1-chloropentane predominantly follows an SN2 mechanism.II. The reaction between sodium hydroxide and 2-chloro-2-methylbutane predominantly follows an SN2 mechanism.III. The reaction of sodium hydroxide with 1-chloropentane occurs at a slower rate than with 1-bromopentane. A) I and II only. B) I and III only. C) II and III only. D) I, II and III. Show Answer Correct Answer: B) I and III only. 5. How many atoms is in this formula? NaFBr2 A) 6. B) 7. C) 4. D) 9. Show Answer Correct Answer: C) 4. 6. The branch of chemistry that would study the process of photosynthesis in plants. A) Biochemistry. B) Inorganic. C) Analytical. D) Physical. Show Answer Correct Answer: A) Biochemistry. 7. Substance present at the start of a reaction A) Product. B) Element. C) Matter. D) Reactant. Show Answer Correct Answer: D) Reactant. 8. A chemistry teacher explores the different uses of Nylon in for the production o textiles. What type of research is used? A) Basic research. B) Applied research. C) Technological development. D) None of above. Show Answer Correct Answer: B) Applied research. 9. Measure of the amount of matter an object has. A) Volume. B) Compound. C) Mass. D) Element. Show Answer Correct Answer: C) Mass. 10. What type of bond is $ k_2O$ A) Covalent. B) Ionic. C) Metallic. D) None of above. Show Answer Correct Answer: B) Ionic. 11. Every element has a unique name. Elements can also be represented by- A) Its chemical weight. B) Mass. C) Periodic group. D) Its chemical symbol. Show Answer Correct Answer: D) Its chemical symbol. 12. Which of the following elements is multivalent? A) Ti. B) He. C) F. D) P. Show Answer Correct Answer: A) Ti. 13. The study of substances that are compounds of carbons A) Physical chemistry. B) Organic chemistry. C) Inorganic chemistry. D) Biochemistry. E) Analytical chemistry. Show Answer Correct Answer: B) Organic chemistry. 14. All binary compounds end with ..... A) -ous. B) -ate. C) -ide. D) -ite. Show Answer Correct Answer: C) -ide. 15. Molecular formula for the oxide of calcium is A) CaO. B) Ca2O. C) None. D) None of above. Show Answer Correct Answer: A) CaO. 16. When heat is removed/released, the temperature of matter decreases and the particles ..... A) Speed up and move farther apart. B) Speed up and move closer together. C) Slow down and move farther apart. D) Slow down and move closer together. Show Answer Correct Answer: D) Slow down and move closer together. 17. Which statement about fats is correct? A) Fats are solid at room temperature. B) Fats are mainly unsaturated. C) Fats are healthier than oils. D) Most fats are plant based. Show Answer Correct Answer: A) Fats are solid at room temperature. 18. What is Hydrogenation? & Is it good for us? A) Hydrogen atoms converting a solid fat into liquid/NO. B) Hydrogen atoms converting a solid fat into liquid/YES. C) Hydrogen atoms converting an oil into a solid form/ NO. D) Hydrogen atoms converting an oil into a solid form/ YES. Show Answer Correct Answer: C) Hydrogen atoms converting an oil into a solid form/ NO. 19. Study of chemicals, that in general, do not contain carbon is called A) Organic chemistry. B) Inorganic chemistry. C) Biochemistry. D) Chemistry. Show Answer Correct Answer: B) Inorganic chemistry. 20. What is the center of the atom called A) Neutron. B) Nucleus. C) Electron. D) Proton. Show Answer Correct Answer: B) Nucleus. ← 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