This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Chemistry > Chemistry Basics > Chemistry – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 6 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The boiling point ofthe water is an example of which of the following? A) Physical property. B) Physical change. C) Chemical change. D) Chemical property. Show Answer Correct Answer: A) Physical property. 2. Which of these is NOT a pure substance? A) Elements. B) Compounds. C) Mixtures. D) They are all pure substances. Show Answer Correct Answer: C) Mixtures. 3. How are mixtures and solutions different form each other? A) There are no differences. B) Once combines chemically the other combines electronically. C) They have more than one elements in them. D) The mixture combines physically and the solution is not easily separated. Show Answer Correct Answer: D) The mixture combines physically and the solution is not easily separated. 4. Homogeneous mixture A) Solution. B) Substance. C) Compound. D) Pure Substance. Show Answer Correct Answer: A) Solution. 5. What are the four elements that all life is made up of? A) Hydrogen, Oxygen, Nitrogen and Carbon. B) Helium, Oxygen, Neon and Carbon. C) Hydrogen, Titanium, Carbon, Nitrogen. D) Oxygen, Chlorine, Iron, Nitrogen. Show Answer Correct Answer: A) Hydrogen, Oxygen, Nitrogen and Carbon. 6. A consumer wants to do his or her part to reduce the production of waste. Which one of the following is he or she likely to do? A) Buy products that cannot be recycled. B) Purchase fewer products. C) Buy from companies that use only new raw materials. D) All of the above. Show Answer Correct Answer: B) Purchase fewer products. 7. Which of the following terms is an example of a solvent? A) Salt. B) Sand. C) Water. D) Sugar. Show Answer Correct Answer: C) Water. 8. What are found in the space surrounding the nucleus of an atom? A) Neutrons. B) Ions. C) Electrons. D) Protons. Show Answer Correct Answer: C) Electrons. 9. Which two families are highly reactive? A) Transition metals and Noble Gases. B) Alkaline Earth Metals and Nitrogen family. C) Alkali Metals and Halogens. D) The Rare Earth metals and Oxygen family. Show Answer Correct Answer: C) Alkali Metals and Halogens. 10. Which one is a decomposition reaction? A) H2O$\rightarrow$H2+O. B) HC+O2$\rightarrow$CO2+H2O. C) 4Fe+3O2$\rightarrow$2Fe2O3. D) None of above. Show Answer Correct Answer: A) H2O$\rightarrow$H2+O. 11. The total number of protons and neutrons in the nucleus of an atom? A) Law of Conservation of Mass. B) Atomic mass units. C) Mass number. D) Atomic number. Show Answer Correct Answer: C) Mass number. 12. Which statement is TRUE of reactants in a chemical reaction? A) You write them on the right-hand side of the arrow. B) They are what get produced in a chemical reaction. C) They always stay the same. D) Are the substances that you start with. Show Answer Correct Answer: D) Are the substances that you start with. 13. Which is an example of a nucleic acid? A) Sugar. B) DNA. C) Oil. D) Red meat. Show Answer Correct Answer: B) DNA. 14. Why is Carbon Dioxide not on the Periodic Table? A) It is a compound not an element. B) It is a mixture not an element. C) It is combustible. D) It is an alloy. Show Answer Correct Answer: A) It is a compound not an element. 15. How many elements are in HHe A) 5. B) 3. C) 2. D) 4. Show Answer Correct Answer: C) 2. 16. Most of water's properties occur because it is ..... A) A polar ionic. B) Made with oxygen. C) Makes up 75% of the Earth. D) A polar covalent. Show Answer Correct Answer: D) A polar covalent. 17. Which of the following substances is a compound? A) Oxygen. B) Salt. C) Helium. D) None of above. Show Answer Correct Answer: B) Salt. 18. A ..... is made up of two or more different atoms, chemically combined. A) Compound. B) Mixture. C) Molecule. D) None of above. Show Answer Correct Answer: A) Compound. 19. When heat is added/absorbed, the temperature of matter increases and the particles ..... A) Speed up and move closer. B) Speed up and move farther apart. C) Slow down and move closer together. D) Slow down and move farther apart. Show Answer Correct Answer: B) Speed up and move farther apart. 20. H2 would be a ..... A) Molecule. B) Compound. C) Problem. D) Solid. Show Answer Correct Answer: A) Molecule. 21. Whattype of indicator, used in the science lab, will turn magenta when it iscombined with a strong base? A) Red Litmus Paper. B) Phenolphthalein. C) Blue Litmus Paper. D) PH paper. Show Answer Correct Answer: B) Phenolphthalein. 22. Turning a gas to a liquid is called ..... A) Melting. B) Condensation. C) Sublimation. D) Evaporation. Show Answer Correct Answer: B) Condensation. 23. The chemical formula Br2 + Cl2 + 29.4 kJ $\rightarrow$ 2BrCl is a ..... A) Catalyst. B) Exothermic. C) Concentration. D) Endothermic. Show Answer Correct Answer: D) Endothermic. 24. Why is the scientific method important? A) All of the answers have the correct information. B) To give people/scientists a way to answer questions that they have about the world. C) By following the steps in order, scientists are more likely to get valid, accurate results. D) When they write a detailed procedure, it allows other scientists to be able to repeat their experiment. Show Answer Correct Answer: A) All of the answers have the correct information. 25. As soon as force is acted on the Oobleck, for instance rolling it into a ball, it becomes a ..... A) Solid. B) Liquid. C) Leather. D) Gas. Show Answer Correct Answer: A) Solid. 26. During chemical and physical changes, substances can absorb or give off ..... A) Gases. B) Light. C) Energy. D) Particles. Show Answer Correct Answer: C) Energy. 27. Two or more materials that combine chemically form a(n) ..... A) Mixture. B) Compound. C) Physical. D) None of above. Show Answer Correct Answer: B) Compound. 28. The study of the composition, structure, and properties of matter and the changes it undergoes. A) Social Science. B) Biology. C) Chemistry. D) Physics. Show Answer Correct Answer: C) Chemistry. 29. Which statement best explains why solids do not take the shape of their containers? A) Particles in a solid are not bound together in fixed positions and are able to flow freely. B) Particles in a solid are in continuous, rapid, random motion and have no definite shape or volume. C) Particles in a solid are highly compressible and have a high rate of diffusion in other substances. D) Particles in a solid have a fixed shape and volume due to strong intermolecular forces. Show Answer Correct Answer: D) Particles in a solid have a fixed shape and volume due to strong intermolecular forces. 30. The area of study that focuses on the composition of matter. A) Analytical Chemistry. B) Physical Chemistry. C) Biochemistry. D) Inorganic Chemistry. Show Answer Correct Answer: A) Analytical Chemistry. 31. Each element of the periodic table is composed of how many atoms? A) 1. B) 2. C) 3. D) None of above. Show Answer Correct Answer: A) 1. 32. A substance that contains only one type of atom is a(n) A) Element. B) Heterogeneous mixture. C) Homogeneous mixture. D) Compound. Show Answer Correct Answer: A) Element. 33. How many variables can be tested in a controlled experiment? A) One. B) Three. C) Two. D) As many as possible. Show Answer Correct Answer: A) One. 34. Which branch of chemistry would study an unknown material to determine its composition? A) Inorganic. B) Analytical. C) Physical. D) Organic. Show Answer Correct Answer: B) Analytical. 35. Which of these is one of the six most common elements found in the human body? A) Oxygen. B) Helium. C) Water. D) Iron. Show Answer Correct Answer: A) Oxygen. 36. Why is water NOT on the periodic table? A) It is naturally occuring. B) It is a compound, not an element. C) It exists as a solid, a liquid, and a gas. D) Its chemical formula doesn't fit. Show Answer Correct Answer: B) It is a compound, not an element. 37. A student incorrectly wrote the following electron configuration for fluorine as: 1s22s22p4How is this electron configuration for fluorine incorrect? A) It is incorrect because in the 1s orbital, there should be 1 electron instead of 2. B) It is incorrect because in the 2p orbital, there should be 5 electrons instead of 4. C) It is incorrect because in the 2s orbital, there should be 3 electrons instead of 2. D) It is incorrect because there should be an additional 3s level containing 2 electrons. Show Answer Correct Answer: B) It is incorrect because in the 2p orbital, there should be 5 electrons instead of 4. 38. The function of antioxidants is to A) Thicken liquids. B) Slow down the oxidation of fats in food. C) Replace the original flavours. D) Give smooth texture. Show Answer Correct Answer: B) Slow down the oxidation of fats in food. 39. Chemical reactions involve changes in properties and changes in ..... that you can often observe. A) Energy. B) Decomposition. C) Chemical changes. D) Catalyst. E) Activation energy. Show Answer Correct Answer: A) Energy. 40. A reaction that gives off heat to its surroundings is ..... A) Exothermic. B) Endothermic. C) Endergonic. D) None of these. Show Answer Correct Answer: A) Exothermic. 41. Which of the following formulas is correct for sodium phosphate? A) Na3PO4. B) Na2PO3. C) NaPO. D) Na3(PO4)2. Show Answer Correct Answer: A) Na3PO4. 42. The smallest part of an element is A) Atom. B) Compound. C) Proton. D) Mixture. Show Answer Correct Answer: A) Atom. 43. What is it called when a solid turns directly into a gas? A) Sublimation. B) Condensation. C) Liquid. D) None of above. Show Answer Correct Answer: A) Sublimation. 44. An intensive property that refers to the appearance of quality of light reflected from the surface of a mineral. A) Smoothness. B) Color. C) Refraction. D) Luster. Show Answer Correct Answer: D) Luster. 45. 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. 46. How many chlorine (Cl) atoms are in CaCl2? A) 1. B) 2. C) 4. D) 3. Show Answer Correct Answer: B) 2. 47. You are about to open an iced coffee, and notice the label says to "shake well" , the drink must be a ..... A) Suspension. B) Solution. C) Compound. D) Colloid. Show Answer Correct Answer: A) Suspension. 48. Which statement is correct about the cleansing action of soap? A) Soap increases the surface tension of water. B) The hydrophobic part of soap molecules dissolves in water. C) Soap molecules emulsify oil. D) Soap reacts with an acid to form salt. Show Answer Correct Answer: C) Soap molecules emulsify oil. 49. Which particle contributes the negative charge to the atom? A) Nucleus. B) Proton. C) Electron. D) Neutron. Show Answer Correct Answer: C) Electron. 50. Which three compounds can be considered to be a homologous series? A) CH3CH2CH2CH2OH, CH3CH2OCH2CH3, (CH3)2CH2CHO. B) CH3CH2OH, CH3CHO, CH3COOH. C) CH3CH2CH(OH)CH3, CH3CH2CH2CH2OH, (CH3)3COH. D) CH3OH, CH3CH2OH, CH3CH2CH2OH. Show Answer Correct Answer: D) CH3OH, CH3CH2OH, CH3CH2CH2OH. 51. 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. 52. What is the formula for aluminum hydroxide? A) Al(OH)3. B) AlO3. C) AlHO3. D) AlOH3. Show Answer Correct Answer: A) Al(OH)3. 53. 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. 54. What structural feature must a molecule have in order to undergo addition polymerization? A) A polar covalent bond. B) Carbon atoms singly bonded together. C) A carbon-carbon double bond. D) Two functional groups. Show Answer Correct Answer: C) A carbon-carbon double bond. 55. 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. 56. ..... are pure substances made of one type of atom. A) Mixtures. B) Compounds. C) Elements. D) Photosynthesis. Show Answer Correct Answer: C) Elements. 57. A(n) ..... is a substance with a pH less than 7 A) Alkaline. B) Base. C) Acid. D) Buffer. Show Answer Correct Answer: C) Acid. 58. Which statements is correct about the alkali metals when going down Group 1 in the Periodic Table? A) Strength of nucleus to attract an electron into the valence shell increases. B) The reactivity decreases. 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. 59. Where electrons are likely to be found as they travel around the nucleus A) Electron Cloud. B) Within a Proton. C) Nucleus. D) Within a Neutron. Show Answer Correct Answer: A) Electron Cloud. 60. Which reaction occurs via a free-radical mechanism? A) (CH3)3CI + H2O $\rightarrow$ (CH3)3COH + HI. B) C2H6 + Br2 $\rightarrow$ C2H5Br + HBr. C) C2H4 + Br2 $\rightarrow$ C2H4Br2. D) C4H9I + OH-$\rightarrow$ C4H9OH + I-. Show Answer Correct Answer: B) C2H6 + Br2 $\rightarrow$ C2H5Br + HBr. ← PreviousNext →Related QuizzesChemistry QuizzesScience QuizzesChemistry Quiz 1Chemistry Quiz 2Chemistry Quiz 3Chemistry Quiz 4Chemistry Quiz 5Chemistry Quiz 7Chemistry Quiz 8Chemistry Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books