This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 5 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The carbon bearing the unpaired electron in a simple alkyl free radical is ..... hybridized A) Sp. B) Sp2. C) Sp3. D) Sp2d. Show Answer Correct Answer: B) Sp2. 2. Which of the following statements about alkenes is not correct? A) They have reactive double bonds. B) They can form addition polymers. C) They react mainly by substitution. D) They can react with water to form alcohols. Show Answer Correct Answer: C) They react mainly by substitution. 3. A reaction in which energy is given off or released. A) Endothermic. B) Exothermic. C) Chemical. D) Physical. Show Answer Correct Answer: B) Exothermic. 4. Elements combine chemically to form ..... A) Solutions. B) Pure Substances. C) Compounds. D) Mixtures. Show Answer Correct Answer: C) Compounds. 5. A substance formed by two or more different elements defines a/an A) Mixture. B) Molecule. C) Compound. D) None of above. Show Answer Correct Answer: C) Compound. 6. The characteristics or properties of metals include A) Shiny and solid. B) Ductile and malleable. C) Lose electrons. D) All of the above. Show Answer Correct Answer: D) All of the above. 7. Which is the following is NOT a sign of a chemical change? A) Releasing a gas. B) Releasing bubbles. C) Changing state. D) Rearranging atoms. Show Answer Correct Answer: C) Changing state. 8. A nugget of gold is an example of: A) Compound. B) Element. C) Solution. D) None of above. Show Answer Correct Answer: B) Element. 9. Which of these is NOT the correct way to read the symbol in a chemical equation? A) (g) = grams. B) (aq) = solution. C) (s) = solid. D) (l) = liquid. Show Answer Correct Answer: A) (g) = grams. 10. A vapor is a gaseous substance that is a liquid at room temperature. A) Always True. B) Sometimes True. C) Never True. D) None of above. Show Answer Correct Answer: B) Sometimes True. 11. Sodium (Na) is a highly reactive element. Which characteristic of sodium is responsible for its reactivity? A) It has 11 protons. B) Its atomic mass is 23. C) It is a nonmetal. D) It has one valence electron. Show Answer Correct Answer: D) It has one valence electron. 12. Which of the following elements must be present in any organic compound? A) Carbon. B) Oxygen. C) Potassium. D) Hydrogen. Show Answer Correct Answer: A) Carbon. 13. Glucose + oxygen $\rightarrow$ water + energy + carbon dioxide is an example of A) Combustion. B) Cellular Respiration. C) Corrosion. D) Photosythesis. Show Answer Correct Answer: B) Cellular Respiration. 14. Crisco is an example of what type of fat? A) Monounsaturated. B) Trans. C) Polyunsaturated. D) Saturated. Show Answer Correct Answer: B) Trans. 15. A material with a constant composition. A) Substance. B) Mixture. C) Solution. D) Heterogeneous. Show Answer Correct Answer: A) Substance. 16. ..... are things you can observe and describe about matter without changing it chemically. A) Physical changes. B) Chemical changes. C) Physical properties. D) Chemical properties. Show Answer Correct Answer: C) Physical properties. 17. All chemical reactions need a certain amount of ..... to get started. A) Catalyst. B) Energy. C) Activation energy. D) Decomposition. E) Chemical changes. Show Answer Correct Answer: C) Activation energy. 18. Branch of chemistry that is concerned with the study of structure, properties, composition, and reactions of carbon-containing compounds. A) Biochemistry. B) Organic Chemistry. C) Inorganic Chemistry. D) Analytical Chemistry. Show Answer Correct Answer: B) Organic Chemistry. 19. A group of students are testing several solutions to determine if they are acidic or basic. Which piece(s) of laboratory safety equipment should be worn during the investigation? A) Goggles. B) Goggles and gloves. C) Goggles and aprons. D) Goggles, gloves, and aprons. Show Answer Correct Answer: D) Goggles, gloves, and aprons. 20. Give the name of this compound ..... C3H8 A) Propene. B) Butane. C) Butene. D) Propane. Show Answer Correct Answer: D) Propane. ← PreviousNext →Related QuizzesScience QuizzesChemistry Quiz 1Chemistry Quiz 2Chemistry Quiz 3Chemistry Quiz 4Chemistry Quiz 6Chemistry Quiz 7Chemistry Quiz 8Chemistry Quiz 9Chemistry Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books