This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry – Quiz 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 8 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Equal sides and equal angles (90$^ \circ$) A) Cubic. B) Tetragonal. C) Orthorhombic. D) None of above. Show Answer Correct Answer: A) Cubic. 2. When writing chemical formulas, the ..... is always written first. A) Nonmetal. B) Least electronegative. C) Negative. D) Positive. Show Answer Correct Answer: D) Positive. 3. What is the volume of distilled water added to 50.0 cm3 of 1.0 mol dm-3 ethanoic acid in order to dilute it to 0.2 mol dm-3 ethanoic acid? A) 100 cm3. B) 150 cm3. C) 200 cm3. D) 250 cm3. Show Answer Correct Answer: C) 200 cm3. 4. The Law of conservation of mass means that if there are 2 atoms of hydrogen on the product side, there must be ..... atoms of hydrogen on the reactant side. A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 5. A solid substance that forms when 2 liquid solutions are combined? A) Sublimation. B) Precipitate. C) Condensation. D) Freezing. Show Answer Correct Answer: B) Precipitate. 6. What is it called when particles in a solid or liquid move slower and closer together? A) Temperature. B) Motion. C) Contracting. D) Expanding. Show Answer Correct Answer: C) Contracting. 7. What environmental element assists rusting? A) Nitrogen. B) Carbon. C) Oxygen. D) Hydrogen. Show Answer Correct Answer: C) Oxygen. 8. Which aspect of a chemical reaction is affected by enzymes? A) Direction. B) Rate. C) Equilibrium. D) PH. Show Answer Correct Answer: B) Rate. 9. If the density of a solution is 4.5g/mL, the mass of 1.4mL solution in significant figure is A) 3.21g. B) 4.5g. C) 0.63g. D) 6.3g. Show Answer Correct Answer: D) 6.3g. 10. Animal cells have four main molecules that keep the body healthy. What type of molecule in animal cells provides a "map" for making proteins? A) Lipids. B) Proteins. C) Nucleic acids. D) Carbohydrates. Show Answer Correct Answer: C) Nucleic acids. 11. What are Physical Changes? A) Changes that do not affect the identity of the substance. B) A property that depends on the type of matter in a sample, not the amount of matter. C) A property that depends on the amount of matter in a sample. D) When one or more substances are converted into different substances. Show Answer Correct Answer: A) Changes that do not affect the identity of the substance. 12. Calcium + zinc nitrate goes to A) Calcium + zinc nitrate. B) Zinc + calcium nitrate. C) There will be no reaction. D) Zinc + calcium chloride. Show Answer Correct Answer: B) Zinc + calcium nitrate. 13. Which of the following is a possible compound formed from Ca2+ and NO3-1? A) Ca2NO3. B) Ca(NO3)2. C) Ca3NO2. D) CaNO. Show Answer Correct Answer: B) Ca(NO3)2. 14. FE A) Iron g8 p9. B) Iron g8 p4. C) Tin g6 p7. D) None of above. Show Answer Correct Answer: B) Iron g8 p4. 15. ..... is the branch of chemistry that would measure the energy changes in chemical reactions. A) Energetics. B) Organic Chemistry. C) Biochemistry. D) Kinetics. Show Answer Correct Answer: A) Energetics. 16. Which is a physical change? A) Burning coal. B) Tearing paper. C) Digesting food. D) Iron rusting. Show Answer Correct Answer: B) Tearing paper. 17. A mixture in which two or more substances are evenly mixed but not bonded together A) Heterogeneous mixture. B) Physical change. C) Homogeneous mixture. D) Chemical change. Show Answer Correct Answer: C) Homogeneous mixture. 18. What are chemical reactions that absorb energy? A) Endothermic. B) Fast. C) Slow. D) Exothermic. Show Answer Correct Answer: A) Endothermic. 19. The atomic number of an elements is the total number of which particles in the nucleus? A) Neutrons. B) Protons. C) Electrons. D) Protons and electrons. Show Answer Correct Answer: B) Protons. 20. What is the mass of a proton and a neutron? A) 1amu. B) 2grams. C) 13amu. D) 10cm. Show Answer Correct Answer: A) 1amu. ← PreviousNext →Related QuizzesScience QuizzesChemistry Quiz 1Chemistry Quiz 2Chemistry Quiz 3Chemistry Quiz 4Chemistry Quiz 5Chemistry Quiz 6Chemistry Quiz 7Chemistry Quiz 9Chemistry Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books