This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry – Quiz 14 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 14 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How many moles are in 15 grams of lithium? A) 0.5 moles. B) 104.1 moles. C) 2.2 moles. D) 50 moles. Show Answer Correct Answer: C) 2.2 moles. 2. Positively charged subatomic particles A) Protons. B) Neutrons. C) Electrons. D) None of above. Show Answer Correct Answer: A) Protons. 3. What do you call the experiment used by JJ Thomson in discovering electron. A) Gold Foil Experiment. B) Beryllium Experiment. C) Density Experiment. D) Cathode Ray Experiment. Show Answer Correct Answer: D) Cathode Ray Experiment. 4. The nucleus of an atom contains ..... and ..... A) Protons and Neutrons. B) Protons and Electrons. C) Neutrons and Electrons. D) Electrons Only. Show Answer Correct Answer: A) Protons and Neutrons. 5. Which one of the following metals does not react with water to produce Hydrogen? A) Sodium. B) Lithium. C) Cadmium. D) Potassium. Show Answer Correct Answer: C) Cadmium. 6. When an atom gains a valence electron, it becomes a(n) ..... ion. A) Positive. B) Negative. C) Neutral. D) Polyatomic. Show Answer Correct Answer: B) Negative. 7. A conversion factor derived from the coefficients of a balanced chemical equation interpreted in term of mole. A) Ratio. B) Molecular ratio. C) Molecule unit. D) Mole ratio. Show Answer Correct Answer: D) Mole ratio. 8. Condensing means transforming from gas to ..... A) Solid. B) Liquid. C) Gas. D) Plasma. Show Answer Correct Answer: B) Liquid. 9. When an atom loses an electron, it A) Becomes negatively charged. B) Obtains a neutral charge. C) Becomes positively charged. D) Will form a metallic bond. Show Answer Correct Answer: C) Becomes positively charged. 10. What does a buffer do? A) Neutralizes strong acids. B) Neutralizes strong bases. C) Neutralizes strong acids and strong bases. D) None of above. Show Answer Correct Answer: C) Neutralizes strong acids and strong bases. 11. Which of the following compounds has ONLY covalent bonds? A) Li2O. B) NO2. C) BaO. D) Mg3P2. Show Answer Correct Answer: B) NO2. 12. Molar mass is defined as A) The number of particles in 1 mole of a substance. B) SI base unit that describes the amount of a substance. C) Amount of a substance necessary to have a positive charge. D) The mass in grams of 1 mole of a substance. Show Answer Correct Answer: D) The mass in grams of 1 mole of a substance. 13. A process which separates two liquids based on differences in their boiling points is A) Evaporation. B) Filtration. C) Absorption. D) Distillation. Show Answer Correct Answer: D) Distillation. 14. The attraction between molecules of the same kind is known as ..... A) Adhesion. B) Cohesion. C) Surface tension. D) None of above. Show Answer Correct Answer: B) Cohesion. 15. Which of the following is not a physical state of matter? A) Solid. B) Gas. C) Element. D) Liquid. Show Answer Correct Answer: C) Element. 16. Particles in an atom that are neutral and have no charge are A) Negatrons. B) Electrons. C) Neutrons. D) Protons. Show Answer Correct Answer: C) Neutrons. 17. Why is deuterium 2H1 sometimes called heavy hydrogen? A) It has extra nucleus. B) It has extra proton. C) It has extra electron. D) It has extra neutron. Show Answer Correct Answer: C) It has extra electron. 18. Why do sugar particles dissolve faster in hot water? A) Water particles move slow. B) Water particles move fast. C) Water particles settle down. D) Water particles stay on top. Show Answer Correct Answer: B) Water particles move fast. 19. How many grams are there in 7.40 moles of AgNO3? A) 0.043 grams. B) 680 grams. C) 0.140 grams. D) 1260 grams. Show Answer Correct Answer: D) 1260 grams. 20. Calculate the mass percent of solution, if there is 100 g of sugar and 400 g of water A) 30. B) 25. C) 20. D) 15. Show Answer Correct Answer: C) 20. ← 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