This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry – Quiz 49 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 49 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What are Heterogeneous mixtures? A) A property that depends on the amount of matter in a sample. B) Characteristics that can be observed/measured without changing the identity of the substance. C) The components are unevenly distributed with a non-uniform composition. D) The component substances are evenly distributed throughout the mixture. The composition is uniform. Show Answer Correct Answer: C) The components are unevenly distributed with a non-uniform composition. 2. Which substance is chemically combined? A) Element. B) Compound. C) Mixture. D) Property. Show Answer Correct Answer: B) Compound. 3. Which word means to be pounded into sheets? A) Ductile. B) Malleable. C) Dissolvable. D) Ferment. Show Answer Correct Answer: B) Malleable. 4. It is a substance that cannot be separated into simpler substances by chemical means. A) Compound. B) Matter. C) Mixture. D) Element. Show Answer Correct Answer: D) Element. 5. What is the study of the composition, structure, and properties of MATTER? A) Chemistry. B) Biology. C) Geology. D) Physics. Show Answer Correct Answer: A) Chemistry. 6. In a molecule of fluorine, the two shared electrons give each fluorine atom ..... electron(s) in the outer energy level. A) 1. B) 3. C) 8. D) 32. Show Answer Correct Answer: C) 8. 7. Matter is a composition that is always the same is ..... A) Mixture. B) Atom. C) Matter. D) Substance. Show Answer Correct Answer: D) Substance. 8. What is the difference between HO and He? A) HO what santa says while delivering presents. B) No difference. C) HO is two elements because both are caps and He is one element since it is lower case. D) They are both two atoms. Show Answer Correct Answer: C) HO is two elements because both are caps and He is one element since it is lower case. 9. What type of elements are generally found in covalent drawings? A) Non-metals. B) Metals. C) Metals and non-metals. D) None of above. Show Answer Correct Answer: A) Non-metals. 10. Which of the following describes covalent bonds? A) Bonds form because of opposite charges. B) Bonds form to fill outer electron shells. C) Electrons are transferred between atoms. D) Covalent bonds are magical. Show Answer Correct Answer: B) Bonds form to fill outer electron shells. 11. These are found on the Periodic Table. A) Compounds. B) Elements. C) Mixtures. D) None of above. Show Answer Correct Answer: B) Elements. 12. In a reaction, the amount of product was calculated to be 10.0 g. In the lab, the amount of product obtained was 8.2 g. Find the percent yield. A) 8.2%. B) 82%. C) 122%. D) 0.82%. Show Answer Correct Answer: B) 82%. 13. Alters a substance without changing its composition A) Physical Change. B) Chemical Change. C) Chemical Reaction. D) Physical Reaction. Show Answer Correct Answer: A) Physical Change. 14. Which statement is correct about the enantiomers of a chiral compound? A) Their physical properties are different. B) All their chemical reactions are identical. C) A racemic mixture will rotate the plane of polarized light. D) They will rotate the plane of polarized light in opposite directions. Show Answer Correct Answer: D) They will rotate the plane of polarized light in opposite directions. 15. Alex wants to mix two substances together and to find out if a chemical reaction happens. What should he do? A) Test the solubility before and after mixing. B) Measure the volume before and after mixing. C) Measure the mass before and after mixing. D) Test the density of the before substance but not the after substances. Show Answer Correct Answer: A) Test the solubility before and after mixing. 16. When biomolecular subunits are joined together, what is produced or is a byproduct? A) Oil. B) Water. C) Protein. D) Sugar. Show Answer Correct Answer: B) Water. 17. What is it called when a liquid at times acts like a solid? A) Non-Newtonian substance. B) A gas substance. C) A watery substance. D) Non-liquid Seuss substance. Show Answer Correct Answer: A) Non-Newtonian substance. 18. Which of the following is an example of $ Heterogeneous\ Mixture$ . A) Oil & water. B) Salt & water. C) Sugar & water. D) None of above. Show Answer Correct Answer: A) Oil & water. 19. Which equations represent the incomplete combustion of methane? I. CH4(g) + 2 O2(g) $\rightarrow$ CO2(g) + 2 H2O(g)II. CH4(g) + 1 1/2 O2(g) $\rightarrow$ CO(g) + 2 H2O(g)III. CH4(g) + O2(g) $\rightarrow$ C(s) + 2 H2O(g) A) I and II only. B) I and III only. C) II and III only. D) I, II and III. Show Answer Correct Answer: C) II and III only. 20. A ..... is a substance made of two or more DIFFERENT elements chemically combined. A) Mixture. B) Compound. C) Substance. D) None of above. Show Answer Correct Answer: B) Compound. ← PreviousNext →Related QuizzesScience QuizzesChemistry Quiz 1Chemistry Quiz 2Chemistry Quiz 3Chemistry Quiz 4Chemistry Quiz 5Chemistry Quiz 6Chemistry Quiz 7Chemistry Quiz 8Chemistry Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books