This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry – Quiz 18 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 18 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. An intensive property that refers to the appearance of quality of light reflected from the surface of a mineral. A) Luster. B) Color. C) Refraction. D) Smoothness. Show Answer Correct Answer: A) Luster. 2. Covalent bonds form between1. Metal-Non-metal 2. Non-metal-Non-metal3. Metal-Metalloid 4. Non-metal-Metalloid A) 1 and 2. B) 2 and 3. C) 3 and 4. D) 2 and 4. Show Answer Correct Answer: D) 2 and 4. 3. How many chlorine (Cl) atoms are in CaCl2? A) 2. B) 4. C) 1. D) 3. Show Answer Correct Answer: A) 2. 4. You are about to open an iced coffee, and notice the label says to "shake well" , the drink must be a ..... A) Solution. B) Colloid. C) Suspension. D) Compound. Show Answer Correct Answer: C) Suspension. 5. Which statement is correct about the cleansing action of soap? A) Soap molecules emulsify oil. B) Soap reacts with an acid to form salt. C) Soap increases the surface tension of water. D) The hydrophobic part of soap molecules dissolves in water. Show Answer Correct Answer: A) Soap molecules emulsify oil. 6. Which particle contributes the negative charge to the atom? A) Proton. B) Electron. C) Neutron. D) Nucleus. Show Answer Correct Answer: B) Electron. 7. Which three compounds can be considered to be a homologous series? A) CH3OH, CH3CH2OH, CH3CH2CH2OH. B) CH3CH2OH, CH3CHO, CH3COOH. C) CH3CH2CH(OH)CH3, CH3CH2CH2CH2OH, (CH3)3COH. D) CH3CH2CH2CH2OH, CH3CH2OCH2CH3, (CH3)2CH2CHO. Show Answer Correct Answer: A) CH3OH, CH3CH2OH, CH3CH2CH2OH. 8. The cells in living things contain four main molecules that allow the cells to function. Which of these molecules cannot mix with water? A) Lipids. B) Proteins. C) Nucleic acids. D) Carbohydrates. Show Answer Correct Answer: A) Lipids. 9. What is the formula for aluminum hydroxide? A) Al(OH)3. B) AlOH3. C) AlHO3. D) AlO3. Show Answer Correct Answer: A) Al(OH)3. 10. What bonds to make an ionic bonds? A) Metals and metals. B) Metals and nonmetals. C) Nonmetals and metalloids. D) Nonmetals and nonmetals. Show Answer Correct Answer: B) Metals and nonmetals. 11. What structural feature must a molecule have in order to undergo addition polymerization? A) Two functional groups. B) A carbon-carbon double bond. C) Carbon atoms singly bonded together. D) A polar covalent bond. Show Answer Correct Answer: B) A carbon-carbon double bond. 12. What are Intensive Properties? A) Pure substances made up of only one kind of atom. 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) Substance that is made from the atoms of 2 or more elements that are chemically bonded/combined. Show Answer Correct Answer: B) A property that depends on the type of matter in a sample, not the amount of matter. 13. ..... are pure substances made of one type of atom. A) Compounds. B) Mixtures. C) Elements. D) Photosynthesis. Show Answer Correct Answer: C) Elements. 14. Which statements is correct about the alkali metals when going down Group 1 in the Periodic Table? A) The reactivity decreases. B) Strength of nucleus to attract an electron into the valence shell increases. C) Electropositivity decreases. D) The single valence electron becomes more weakly pulled by the nucleus. Show Answer Correct Answer: D) The single valence electron becomes more weakly pulled by the nucleus. 15. A compound A) Is a substance. B) Has a composition that varies. C) Can be physically separated into its elements. D) Has properties similar to those of its elements. Show Answer Correct Answer: A) Is a substance. 16. Where electrons are likely to be found as they travel around the nucleus A) Nucleus. B) Electron Cloud. C) Within a Proton. D) Within a Neutron. Show Answer Correct Answer: B) Electron Cloud. 17. Which reaction occurs via a free-radical mechanism? A) C2H6 + Br2 $\rightarrow$ C2H5Br + HBr. B) C2H4 + Br2 $\rightarrow$ C2H4Br2. C) C4H9I + OH-$\rightarrow$ C4H9OH + I-. D) (CH3)3CI + H2O $\rightarrow$ (CH3)3COH + HI. Show Answer Correct Answer: A) C2H6 + Br2 $\rightarrow$ C2H5Br + HBr. 18. Sandra was burning a vanilla candle. Was there a chemical reaction? A) No, because burning is never a chemical reaction. B) Yes, because the properties of the wick changed. C) Yes, because heat was added. D) No, because the ash formed was a different substance. Show Answer Correct Answer: B) Yes, because the properties of the wick changed. 19. Process from solid to liquid. A) Freezing. B) Evaporation. C) Melting. D) Sublimation. Show Answer Correct Answer: C) Melting. 20. Boiling A) Liquid to gas. B) Gas to solid. C) Gas to liquid. D) Solid to liquid. Show Answer Correct Answer: A) Liquid to gas. ← 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