This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 6 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When atoms combine, they may gain, lose, or share A) Protons. B) Electrons. C) Neutrons. D) Nuclei. Show Answer Correct Answer: B) Electrons. 2. The identity of an element can be determined on the basis of which of the following? A) The number of neutrons. B) The number of protons. C) The mass number. D) The number of electrons. Show Answer Correct Answer: B) The number of protons. 3. What is the family name for group 18? A) Chalogens. B) Halogens. C) Transition Metals. D) Noble Gases. Show Answer Correct Answer: D) Noble Gases. 4. What determines the identity of an atom? A) The nucleus. B) The number of electrons. C) The number of neutrons. D) The number of protons. Show Answer Correct Answer: D) The number of protons. 5. Which area of chemistry deals with muscles and digestion? A) Biochemistry. B) Analytical. C) Organic. D) Inorganic. Show Answer Correct Answer: A) Biochemistry. 6. The atomic number of carbon is 6. How many unpaired electrons are in its outer shell? A) 2. B) 4. C) 5. D) 6. Show Answer Correct Answer: B) 4. 7. Acids have a pH of ..... A) 1-6. B) 7. C) 8-14. D) 0. Show Answer Correct Answer: A) 1-6. 8. Which of the primary component of natural gas? A) Butane. B) Ethane. C) Propane. D) Methane. Show Answer Correct Answer: D) Methane. 9. The electrons involved in bonding are A) Found closest to the nucleus. B) Found in the nucleus. C) In the highest occupied energy level(s). D) None of the choices. Show Answer Correct Answer: C) In the highest occupied energy level(s). 10. The center of an atom is called A) Electron cloud. B) Valence. C) Nucleus. D) Energy level. Show Answer Correct Answer: C) Nucleus. 11. Why is it important to study chemistry? A) Explain the natural world. B) Prepare for a career. C) Be an informed citizen. D) All three options. Show Answer Correct Answer: D) All three options. 12. Which biomolecule is also known as enzymes? A) Carbohydrate. B) Lipid. C) Nucleic Acid. D) Protein. Show Answer Correct Answer: D) Protein. 13. Using their properties mixtures can be separated too. When iron and wooden match mixed and you wish to separate them, how would it be possible? A) Place them in water. B) Use magnet to attract the iron. C) Dissolve them in water. D) Get their densities. Show Answer Correct Answer: B) Use magnet to attract the iron. 14. What is the mass of 6.25 mol of Cu(NO3)2? A) 126 g. B) 785 g. C) 625 g. D) 1172 g. Show Answer Correct Answer: D) 1172 g. 15. The elements argon, krypton, and xenon are all non-metals. What property would these elements have in common? A) Good conductor of thermal energy. B) Poor conductor of electricity. C) Shiny, lustrous surface. D) Soft and malleable. Show Answer Correct Answer: B) Poor conductor of electricity. 16. What is the maximum capacity of electrons located in the 3rd main energy level? A) 2 electrons. B) 8 electrons. C) 18 electrons. D) 32 electrons. Show Answer Correct Answer: C) 18 electrons. 17. What are the products from the following reactants:C3H8 + O2? A) Carbon Dioxide + Oxygen. B) Water and Oxygen. C) Carbon monoxide and water. D) Carbon dioxide and water. Show Answer Correct Answer: D) Carbon dioxide and water. 18. Atoms of the same element with a different number of neutrons A) Ion. B) Gluons. C) Isotope. D) Quarks. Show Answer Correct Answer: C) Isotope. 19. The energy stored in the mass of nuclei is A) Chemical energy. B) Nuclear energy. C) Heat energy. D) Radiant energy. Show Answer Correct Answer: B) Nuclear energy. 20. The nucleus of a hydrogen atom consists of A) 1 proton only. B) 1 neutron only. C) 1 electron only. D) 1 proton + 2 neutron. Show Answer Correct Answer: A) 1 proton only. ← PreviousNext →Related QuizzesScience QuizzesChemistry Quiz 1Chemistry Quiz 2Chemistry Quiz 3Chemistry Quiz 4Chemistry Quiz 5Chemistry Quiz 7Chemistry Quiz 8Chemistry Quiz 9Chemistry Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books