This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry Basics > Chemistry – Quiz 56 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 56 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. James observes that a yellow, solid substance has formed when he mixes two clear liquids together. He believes that a chemical change has taken place. Which of the following statements is true? A) James is correct because only a mixture was formed and no new substances. B) James is correct because a new substance with new properties was formed. C) James is incorrect because no chemical reaction occurred. D) James is incorrect because it was a physical change and not a chemical change. Show Answer Correct Answer: B) James is correct because a new substance with new properties was formed. 2. ..... is the branch of chemistry that would analyze new chemicals made from carbon-containing building blocks. A) Inorganic Chemistry. B) Organic Chemistry. C) Biochemistry. D) Analytical Chemistry. Show Answer Correct Answer: B) Organic Chemistry. 3. The B-F bond in BF3 (electronegativity for B is 2.0; electronegativity for F is 4.0) is A) Polar covalent. B) Ionic. C) Nonpolar covalent. D) Pure covalent. Show Answer Correct Answer: B) Ionic. 4. The Law of Multiple Proportions states A) When two elements combine with each other to form more than one compound, the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers. B) That every chemical compound contains fixed and constant proportions (by mass) of the elements that make up that compound. C) That matter is neither created nor destroyed, only changed during chemical reactions. D) None of above. Show Answer Correct Answer: A) When two elements combine with each other to form more than one compound, the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers. 5. What two substance are formed when an acid and alkali react together in equal amounts? A) Salt and water. B) Alkali and water. C) Acid and water. D) Acid and alkali. Show Answer Correct Answer: A) Salt and water. 6. He was the Greek philosopher who popularized atomism. A) Democritus. B) Melitus. C) Epicurus. D) Leucippus. Show Answer Correct Answer: C) Epicurus. 7. A change in the size, shape, form, or state of matter that does not change the matter's identity A) Physical change. B) Physical property. C) Chemical change. D) Chemical property. Show Answer Correct Answer: A) Physical change. 8. Diamond is an example of ..... A) Giant molecule. B) Simple molecule. C) Ionic compound. D) Metallic bond. Show Answer Correct Answer: A) Giant molecule. 9. What is the definition of saturated? A) No single bonds. B) Contains Carbon-Carbon double bond. C) All Carbon-Carbon bonds are double. D) All Carbon-Carbon bonds are single. Show Answer Correct Answer: D) All Carbon-Carbon bonds are single. 10. Calculate volume in milliliters of 100 g of coconut oil, which has a density of 0.92g/mL. A) 108.7 ml. B) 108.7 L. C) 108.7. D) 100 g/mL. Show Answer Correct Answer: A) 108.7 ml. 11. Process from gas to liquid. A) Evaporation. B) Condensation. C) Deposition. D) Sublimation. Show Answer Correct Answer: B) Condensation. 12. What is the formula formed from the atom U and W. [Proton number of U = 7; W = 9] A) UW3. B) U2W. C) UW. D) UW2. Show Answer Correct Answer: A) UW3. 13. Whatis the correct way to handle chemicals in the laboratory? A) Nevertouch or taste chemicals. B) Keepall chemicals in open containers. C) Keepopen flames within six inches of all chemicals. D) Wipeup chemical spills at the end of each experiment. Show Answer Correct Answer: A) Nevertouch or taste chemicals. 14. A combination of substances that are not chemically combined is called a(n) ..... A) Mixture. B) Compound. C) Physical. D) None of above. Show Answer Correct Answer: A) Mixture. 15. What is the meaning of Synthetic Rubber? A) Elastic in nature or elastomer polymer. B) Involves at least two different monomers. C) The long-chain molecule that is made from a combination of many repeating basic units. D) None of above. Show Answer Correct Answer: A) Elastic in nature or elastomer polymer. 16. A reaction in which energy is gained or absorbed. A) Exothermic. B) Chemical. C) Physical. D) Endothermic. Show Answer Correct Answer: D) Endothermic. 17. Which of the following solutions exactly neutralises 25.0 cm3 of 0.05 mol dm-3 barium hydroxide solution? A) 25.0 cm3 of 0.10 mol dm-3 sulphuric acid. B) 12.5 cm3 of 0.20 mol dm-3 nitric acid. C) 50.0 cm3 of 0.40 mol dm-3 hydrochloric acid. D) 12.5 cm3 of 0.05 mol dm-3 ethanoic acid. Show Answer Correct Answer: B) 12.5 cm3 of 0.20 mol dm-3 nitric acid. 18. Material produced from living or recently living plants or animals and their metabolic byproduct is? A) Char. B) MSW. C) Biofuel. D) Biomass. Show Answer Correct Answer: D) Biomass. 19. Combinations of 2 or more substances (elements and compounds) that are physically blended together. A) Compound. B) Mixture. C) Element. D) Substance. Show Answer Correct Answer: B) Mixture. 20. What kind of charge do electrons have? A) Positive. B) Negative. C) No charge. D) Explosive. Show Answer Correct Answer: B) Negative. ← 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