This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 6 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A characteristic of matter that you can observe or measure without changing the identity of the matter A) Physical change. B) Physical property. C) Chemical change. D) Chemical property. Show Answer Correct Answer: B) Physical property. 2. Two science studentsare setting up a science experiment to determine the qualities of an unknownclear liquid. They gather the necessarymaterials to make their tests, including blue litmus paper. Why do they need blue litmus paper? A) Blue litmus paperis used when working with acid to clean up the spills. B) To test foracidity, blue litmus paper turns red in the presence of an acid. C) Totest for alkalinity, blue litmus paper turns red in the presence of an alkaline. D) To test forwater, blue litmus paper dissolves immediately upon contact with water. Show Answer Correct Answer: B) To test foracidity, blue litmus paper turns red in the presence of an acid. 3. ..... is the branch of chemistry that would identify enzymes and determine reaction mechanisms for biochemical reactions. Pick the ONE that best represents this A) Organic Chemistry. B) Biochemistry. C) Physical Chemistry. D) Analytical Chemistry. Show Answer Correct Answer: B) Biochemistry. 4. ..... are organic compounds that are good sources of energy. They contain carbon, hydrogen, and oxygen in a 1:2:1 ratio A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic acids. Show Answer Correct Answer: A) Carbohydrates. 5. What causes water to have a high specific heat? A) Hydrogen Bonding. B) Ionic Bonds. C) Nonpolar Covalent Bonds. D) Polar Covalent Bonds. Show Answer Correct Answer: A) Hydrogen Bonding. 6. The type of chemistry involved in finding out how much nitrogen is in a sample of air. A) Organic. B) Inorganic. C) Analytical. D) Physical. Show Answer Correct Answer: C) Analytical. 7. To form a solution by mixing evenly A) Solubility. B) Concentration. C) Dissolve. D) Substance. Show Answer Correct Answer: C) Dissolve. 8. These elements are dull, brittle, and poor conductors. A) Metals. B) Nonmetals. C) Metalloids. D) Transformers. Show Answer Correct Answer: B) Nonmetals. 9. What two particles determine the mass number? A) Protons and electrons. B) Electrons and neutrons. C) Protons and neutrons. D) None of above. Show Answer Correct Answer: C) Protons and neutrons. 10. The horizontal rows on the periodic table are known as A) Periods. B) Atoms. C) Groups or families. D) Valence electrons. Show Answer Correct Answer: A) Periods. 11. What is the formula of Sodium sulphate A) NaSO2. B) Na2SO3. C) Na2SO4. D) None of the above. Show Answer Correct Answer: C) Na2SO4. 12. What is the percentage by mass of oxygen in a formula unit of sodium hydrogen carbonate (NaHCO3)? A) 19.05%. B) 28.57%. C) 38.09%. D) 57.14%. Show Answer Correct Answer: D) 57.14%. 13. What are the uses of silicone-butadiene rubber? A) Stapler. B) Rubber bands. C) Book. D) None of above. Show Answer Correct Answer: B) Rubber bands. 14. The building blocks of ..... are fatty acids, which contain a carboxyl group and a hydrocarbon chain. A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic acids. Show Answer Correct Answer: B) Lipids. 15. A milk shake is a(n) A) Mixture. B) Compound. C) Element. D) None of above. Show Answer Correct Answer: A) Mixture. 16. Acetylene is burned in welding torches according to the following chemical reaction:2 C2H2 + 5 O2 $\rightarrow$ 4 C02 + 2 H2OHow many oxygen (O) molecules are involved in the reaction? A) 2. B) 5. C) 4. D) 10. Show Answer Correct Answer: B) 5. 17. Calculate the molecular mass of $ H_2O$ . ( Atomic mass of $ H=1$, $ O=16$ ) A) 17. B) 18. C) 14. D) None of above. Show Answer Correct Answer: B) 18. 18. A ..... is like a recipe for a chemical substance. A) Chemical equation. B) Chemical symbol. C) Chemical formula. D) None of above. Show Answer Correct Answer: C) Chemical formula. 19. A combination of two or more substances in which the substances retain their distinct identities. A) Mixture. B) Element. C) Compound. D) Pure Substance. Show Answer Correct Answer: A) Mixture. 20. What is the definition of a compound? A) The smallest part of any substance which can exist on its own. B) Two or more atoms chemically joined together (can be the same or can be different). C) A simple substance in which all the atoms are identical. D) Two or more different elements chemically joined together. Show Answer Correct Answer: D) Two or more different elements chemically joined together. ← PreviousNext →Related QuizzesScience QuizzesChemistry Quiz 1Chemistry Quiz 2Chemistry Quiz 3Chemistry Quiz 4Chemistry Quiz 5Chemistry Quiz 7Chemistry Quiz 8Chemistry Quiz 9Chemistry Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books