This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry Basics > Chemistry – Quiz 21 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 21 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A substance composed of atoms of two or more elements chemically united in fixed proportions. A) Mixture. B) Element. C) Compound. D) Pure Substance. Show Answer Correct Answer: C) Compound. 2. The study of matter and the changes it undergoes. A) Biochemistry. B) Analytical Chemistry. C) Chemistry. D) Physical Chemistry. Show Answer Correct Answer: C) Chemistry. 3. Which physical properties are associated with most metals? A) Dull, good insulator, brittle. B) Dull, good conductors, malleable. C) Shiny, good conductors, malleable. D) Shiny, good insulator, malleable. Show Answer Correct Answer: C) Shiny, good conductors, malleable. 4. Saponification is used to make what? A) Lotion. B) Perfume. C) Soap. D) Juice. Show Answer Correct Answer: C) Soap. 5. Water is an example of: A) Compound. B) Element. C) Solution. D) None of above. Show Answer Correct Answer: A) Compound. 6. The building blocks of ..... are nucleotides. A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic acids. Show Answer Correct Answer: D) Nucleic acids. 7. The atom around which the electrons spend the most time will have a ..... charge, and the atom around which the electrons spend the least time will have a ..... charge. A) Slightly negative, slightly positive. B) Only positive charge. C) Only negative charge. D) Neutral charge. Show Answer Correct Answer: A) Slightly negative, slightly positive. 8. An element with a mass number of 11 and an atomic number of 5 has how many neutrons? A) 11. B) 5. C) 6. D) 16. Show Answer Correct Answer: C) 6. 9. Neutrons A) No charge, shells. B) Positive charge, nucleus. C) Neutral, no charge, nucleus. D) Negative charge, shells. Show Answer Correct Answer: C) Neutral, no charge, nucleus. 10. Substance produced in a reaction. A) Reactant. B) Product. C) Substance. D) Mass. Show Answer Correct Answer: B) Product. 11. The maximum amount of solute that can dissolve in a given amount of solvent at a given temperature and pressure A) Solubility. B) Dissolve. C) Concentration. D) Compound. Show Answer Correct Answer: A) Solubility. 12. If 238 J of heat is absorbed by a sample of metal with a mass of 40.7 g, and it raises the temperature from 20.0$^ \circ$C to 32.4$^ \circ$C, what is the specific heat capacity of the metal? A) 2.34 J/g$^ \circ$C. B) 0.472 J/g$^ \circ$C. C) 6.13 J/g$^ \circ$C. D) 0.163 J/g$^ \circ$C. Show Answer Correct Answer: B) 0.472 J/g$^ \circ$C. 13. It is one of the frontiers that the chemists are currently exploring in relation to the planting and harvesting of good quality crops. A) Health and Medicine. B) Food and Agriculture. C) Materials and Technology. D) Energy and Environment. Show Answer Correct Answer: B) Food and Agriculture. 14. Which of the following is not a property of a material? A) Flexibility. B) Luster. C) Shape. D) Ability to transmit light. Show Answer Correct Answer: C) Shape. 15. A row across the Periodic Table where each element has the same number of energy shells A) Column. B) Family. C) Period. D) None of above. Show Answer Correct Answer: C) Period. 16. Salt water boils and the water completely evaporates, salt (NaCl) is left in the bottom of the beaker. Which of the following is left in the beaker? A) Compound. B) Element. C) Mixture. D) None of the Above. Show Answer Correct Answer: A) Compound. 17. How many sig figs are there? 27000000 A) 2. B) 5. C) 8. D) None of above. Show Answer Correct Answer: A) 2. 18. What is a compound? A) The simplest form of a substance. B) A combination only of 3 elements. C) A combination of 2 or more elements. D) A place where people are held. Show Answer Correct Answer: C) A combination of 2 or more elements. 19. Choose the particle that has no charge. A) Nucleus. B) Neutron. C) Proton. D) Electron. Show Answer Correct Answer: B) Neutron. 20. The independent variable is the ONE thing you ..... A) Change. B) Keep the same. C) Experiment with. D) Investigate. Show Answer Correct Answer: A) Change. ← 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