This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry Basics > Chemistry – Quiz 16 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 16 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is a mixture? A) A combination of elements to make a new substance. B) A chemically combined substance. C) A combination of substances where new substances are formed through a reaction. D) A combination of substances in which the atoms of the substance do not chemically combine. Show Answer Correct Answer: D) A combination of substances in which the atoms of the substance do not chemically combine. 2. What is the correct name of the compound NO2? A) Nitrogen oxide. B) Mononitrogen dioxide. C) Nitrogen dioxide. D) Dinitrogen monoxide. Show Answer Correct Answer: C) Nitrogen dioxide. 3. How many electrons should Beryllium have around its Lewis dot model? A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 4. In any physical or chemical change, mass is ..... A) Created. B) Destroyed. C) Conserved. D) Changed. Show Answer Correct Answer: C) Conserved. 5. These kind of observations are made using instruments such as rulers, balances and thermometers. A) Qualitative. B) Quantitative. C) Scientific. D) None of above. Show Answer Correct Answer: B) Quantitative. 6. In the chemicalsymbol for nitrogen gas, N2, what does the "2" represent? A) Two nitrogen compounds. B) Two nitrogen atoms. C) Two types of nitrogen gas. D) Two nitrogen symbols. Show Answer Correct Answer: B) Two nitrogen atoms. 7. What is green chemistry? A) The utilization of a set of guidelines that increases or adds the use or generation of hazardous substances in the design, manufacture and application of chemical products. B) The utilization of a set of principles that reduces or eliminates the use or generation of hazardous substances in the design, manufacture and application of chemical products. C) A form of chemistry that focuses on how the color green was chemically formed and its components. D) None of above. Show Answer Correct Answer: B) The utilization of a set of principles that reduces or eliminates the use or generation of hazardous substances in the design, manufacture and application of chemical products. 8. Mixtures are separated through ..... changes. A) Mixture. B) Compound. C) Physical. D) None of above. Show Answer Correct Answer: C) Physical. 9. Which substance is a compound? A) SiH3. B) SiH3. C) Sih3. D) Sih3. Show Answer Correct Answer: A) SiH3. 10. The boiling point ofthe water is an example of which of the following? A) Physical change. B) Chemical change. C) Physical property. D) Chemical property. Show Answer Correct Answer: C) Physical property. 11. Which of these is NOT a pure substance? A) Elements. B) Compounds. C) Mixtures. D) They are all pure substances. Show Answer Correct Answer: C) Mixtures. 12. How are mixtures and solutions different form each other? A) There are no differences. B) Once combines chemically the other combines electronically. C) They have more than one elements in them. D) The mixture combines physically and the solution is not easily separated. Show Answer Correct Answer: D) The mixture combines physically and the solution is not easily separated. 13. Homogeneous mixture A) Solution. B) Compound. C) Pure Substance. D) Substance. Show Answer Correct Answer: A) Solution. 14. What are the four elements that all life is made up of? A) Hydrogen, Oxygen, Nitrogen and Carbon. B) Helium, Oxygen, Neon and Carbon. C) Hydrogen, Titanium, Carbon, Nitrogen. D) Oxygen, Chlorine, Iron, Nitrogen. Show Answer Correct Answer: A) Hydrogen, Oxygen, Nitrogen and Carbon. 15. A consumer wants to do his or her part to reduce the production of waste. Which one of the following is he or she likely to do? A) Buy products that cannot be recycled. B) Purchase fewer products. C) Buy from companies that use only new raw materials. D) All of the above. Show Answer Correct Answer: B) Purchase fewer products. 16. Which of the following terms is an example of a solvent? A) Salt. B) Sand. C) Water. D) Sugar. Show Answer Correct Answer: C) Water. 17. What are found in the space surrounding the nucleus of an atom? A) Protons. B) Electrons. C) Neutrons. D) Ions. Show Answer Correct Answer: B) Electrons. 18. Which two families are highly reactive? A) Transition metals and Noble Gases. B) Alkaline Earth Metals and Nitrogen family. C) Alkali Metals and Halogens. D) The Rare Earth metals and Oxygen family. Show Answer Correct Answer: C) Alkali Metals and Halogens. 19. Which one is a decomposition reaction? A) H2O$\rightarrow$H2+O. B) HC+O2$\rightarrow$CO2+H2O. C) 4Fe+3O2$\rightarrow$2Fe2O3. D) None of above. Show Answer Correct Answer: A) H2O$\rightarrow$H2+O. 20. The total number of protons and neutrons in the nucleus of an atom? A) Mass number. B) Atomic number. C) Atomic mass units. D) Law of Conservation of Mass. Show Answer Correct Answer: A) Mass number. ← 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