This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 4 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which one of the following is a chemicalproperty of matter? A) It's density. B) It's boiling point. C) It's melting point. D) Whether it burns. Show Answer Correct Answer: D) Whether it burns. 2. What happens in ALL chemical changes? A) Change in state of matter. B) A new substance is formed. C) Bubbles are produced. D) An explosion. Show Answer Correct Answer: B) A new substance is formed. 3. How many electrons should Sulfur have around its Lewis dot model? A) 5. B) 6. C) 7. D) 8. Show Answer Correct Answer: B) 6. 4. Which of the following is a synthesis reaction? A) 2H2O $\rightarrow$ 2H2 + O2. B) 2NO + O2 $\rightarrow$ 2NO2. C) 2K + 2H2O $\rightarrow$ 2KOH + H2. D) CH4 + 2O2 $\rightarrow$ CO2 + 2H2O. Show Answer Correct Answer: B) 2NO + O2 $\rightarrow$ 2NO2. 5. ..... is the branch of chemistry that would study enzymes used in the digestion of food. A) Inorganic Chemistry. B) Biochemistry. C) Physical Chemistry. D) None of above. Show Answer Correct Answer: B) Biochemistry. 6. Carbohydrates are made up of three of the six major molecules found in living things. The general chemical formula for a carbohydrate is CH2O. Which elements combine to make a carbohydrate? A) Copper and cobalt. B) Chlorine and oxygen. C) Carbon, helium, and oxygen. D) Carbon, hydrogen, and oxygen. Show Answer Correct Answer: D) Carbon, hydrogen, and oxygen. 7. Which branch of chemistry would NOT be involved in analyzing the composition of medicines and research how it reacts in the body. (Select all that apply) A) Analytical Chemistry. B) Biochemistry. C) Inorganic Chemistry. D) None of above. Show Answer Correct Answer: C) Inorganic Chemistry. 8. My glass of ice water is sitting in the sun and has droplets of water on the outside of the glass. What is happening? A) Condensation. B) Evaporation. C) Melting. D) Freezing. Show Answer Correct Answer: A) Condensation. 9. Which of the following symbols shows only ONE element? A) CU. B) Ar. C) KF. D) WO. Show Answer Correct Answer: B) Ar. 10. ..... is the branch of chemistry that would focus on chemicals made from carbon-containing building blocks. A) Inorganic Chemistry. B) Organic Chemistry. C) Biochemistry. D) Analytical Chemistry. Show Answer Correct Answer: B) Organic Chemistry. 11. Glucose (C6H12O6) and sucrose (C12H22O11) are both sugars produced by plants and consumed by animals for energy. Which best describes glucose and sucrose? A) They are the same substance. B) They are mixtures with the same chemical formula. C) They are compounds made up of the same elements. D) They have the same hydrogen to carbon ratio and form a crystalline structure. Show Answer Correct Answer: C) They are compounds made up of the same elements. 12. Which event is describing a chemical change? A) A bicycle rusts. B) A soccer ball hits a window. C) Nail polish chips. D) You brush your hair. Show Answer Correct Answer: A) A bicycle rusts. 13. Branch of chemistry that is concerned with the study of structure, composition, and chemical reactions of substances in living systems. A) Biochemistry. B) Analytical Chemistry. C) Physical Chemistry. D) Inorganic Chemistry. Show Answer Correct Answer: A) Biochemistry. 14. Why is transportation an issue for the textile industry? A) The industry prefers to keep the textiles in refrigerated transportation. B) Excessive consumption of non-renewable fuel. C) Textile production units is generally close to the the consumer point. D) None of the above. Show Answer Correct Answer: B) Excessive consumption of non-renewable fuel. 15. Salad is an example of ..... A) A mixutre. B) An element. C) A compound. D) None of above. Show Answer Correct Answer: A) A mixutre. 16. Colloids are A) Clear mixtures that have fully dissolved parts. B) A mixture that will separate into different parts when left to settle. C) A suspension that appears cloudy and scatters light. D) A solution that has all parts visible. Show Answer Correct Answer: C) A suspension that appears cloudy and scatters light. 17. $ X\left(No_3\right)_3$ what is the charge of X A) 0. B) -1. C) -3. D) +3. Show Answer Correct Answer: D) +3. 18. He was the Greek philosopher who thought that all matter is composed of water. A) Empedocles. B) Aristotle. C) Thales. D) Anaximenes. Show Answer Correct Answer: C) Thales. 19. The mass of ethanedioic acid, H2C2O4 in 250 cm3 of0.25 mol dm-3 solution is A) 5.625 g. B) 11.250 g. C) 22.500 g. D) 33.750 g. Show Answer Correct Answer: A) 5.625 g. 20. In general, metals react by ..... A) Sharing valence electrons. B) Gaining valence electrons. C) Losing valence electrons. D) Sometimes gaining and sometimes losing valence electrons. Show Answer Correct Answer: C) Losing valence electrons. ← PreviousNext →Related QuizzesScience QuizzesChemistry Quiz 1Chemistry Quiz 2Chemistry Quiz 3Chemistry Quiz 5Chemistry Quiz 6Chemistry Quiz 7Chemistry Quiz 8Chemistry Quiz 9Chemistry Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books