This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry Basics > Chemistry – Quiz 20 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 20 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number. A) 20. B) 10. C) 5. D) 25. Show Answer Correct Answer: D) 25. 2. A certain element is dense, shiny, and is a goodconductor of both heat and electricity. Based on these characteristics, whattype of element is this? A) Metal. B) Nonmetal. C) Metalloid. D) Plastic. Show Answer Correct Answer: A) Metal. 3. A displacement reaction is a chemical reaction in which a ..... element displaces another element A) Less. B) The same. C) Moore. D) More. Show Answer Correct Answer: D) More. 4. A ..... is a group of two or more atoms that are held together by chemical bonds A) Atom. B) Chemical. C) Molecule. D) Element. Show Answer Correct Answer: C) Molecule. 5. An element with a mass number of 10 and an atomic number of 6 has how many protons? A) 5. B) 8. C) 6. D) 10. Show Answer Correct Answer: C) 6. 6. What is H 2 4 made up of? A) 2 hydrogen, 1 sulfur, 4 oxygen. B) 1 hydrogen, 2 sulfur, 4 oxygen. C) 2 hydrogen & 4 sodium. D) 1 hydrogen & 6 sodium. Show Answer Correct Answer: A) 2 hydrogen, 1 sulfur, 4 oxygen. 7. Which of the following is not considered a major element of life? A) Carbon. B) Hydrogen. C) Oxygen. D) Calcium. E) Nitrogen. Show Answer Correct Answer: D) Calcium. 8. ..... refers to the way a metal can be hammered or rolled into thin sheets. A) Ductility. B) Luster. C) Malleability. D) Conductivity. Show Answer Correct Answer: C) Malleability. 9. Mixtures that have the same composition throughout are ..... A) Heterogeneous. B) Homogeneous. C) Elements. D) Pure substances. Show Answer Correct Answer: B) Homogeneous. 10. What is organic chemistry? A) Chemistry relating to biological organisms. B) Chemistry involving carbon. C) Chemistry involving micro-organisms. D) Chemistry involving oxygen. Show Answer Correct Answer: B) Chemistry involving carbon. 11. The production of useful substances by use of technology is studied under which branch of chemistry? A) Biochemsitry. B) Analytical Chemistry. C) Environmental Chemsitry. D) Industrial Chemistry. Show Answer Correct Answer: D) Industrial Chemistry. 12. Air is an example of ..... A) Mixture. B) Element. C) Compound. D) None of above. Show Answer Correct Answer: A) Mixture. 13. What do cells use proteins to do? A) Make new proteins. B) Build and repair body structures. C) Regulate life processes. D) All of the above. Show Answer Correct Answer: D) All of the above. 14. The degree of hot or coldness of an object is its ..... A) Temperature. B) Mass. C) Weight. D) Volume. Show Answer Correct Answer: A) Temperature. 15. Study which involves changes in nucleus of element A) Analytical chemistry. B) Biological chemistry. C) Nuclear chemistry. D) Modern chemistry. Show Answer Correct Answer: C) Nuclear chemistry. 16. Elements which are shiny, conduct electricity and heat are called ..... A) Metals. B) Non-metals. C) Metalloids. D) Non-existent. Show Answer Correct Answer: A) Metals. 17. In the laboratory, one should NEVER ..... A) Ask questions. B) Know how to contact help. C) Wear safety goggles and a lab apron. D) Perform experiments without your teacher's permission. Show Answer Correct Answer: D) Perform experiments without your teacher's permission. 18. A professor explores the toxic compounds in marine animals A) Basic research. B) Applied research. C) Technological research. D) None of above. Show Answer Correct Answer: A) Basic research. 19. Substances are changed into different substances when bonds break and form during A) Chemical equilibrium. B) Chemical reactions. C) Ion formation. D) Hydrogen bonding. Show Answer Correct Answer: B) Chemical reactions. 20. What is a substance that is dissolved in another substance? A) Solution. B) Solute. C) Solvent. D) Compound. Show Answer Correct Answer: B) Solute. ← 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