This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Chemistry > Chemistry Basics > Chemistry – Quiz 18 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 18 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which kind of pesticide controls weeds? A) Rodenticide. B) Fungicide. C) Fungicide. D) Herbicide. Show Answer Correct Answer: D) Herbicide. 2. Formed when 2 or more different elements are joined together chemically A) Mass. B) Compound. C) Mixture. D) Element. Show Answer Correct Answer: B) Compound. 3. An ice cube is put into a heated pan. What will most likely happen to the molecules in the ice as the ice is heated A) The molecules will begin to move faster. B) The molecules will begin to increase in density. C) The molecules will begin to condense in the air. D) The molecules will begin to move slower. Show Answer Correct Answer: A) The molecules will begin to move faster. 4. Zane is making a chart of compounds that are found in the human body. What is the most common compound found in the human body? A) NaCl (table Salt). B) CO2. C) H2O. D) Sodium Bicarbonate (baking soda). Show Answer Correct Answer: C) H2O. 5. Unstable nuclei that emit rays or particles to become stable are said to? ? ? A) Decay. B) Isotopes. C) React. D) Radioactive. Show Answer Correct Answer: A) Decay. 6. What is the chemical formula for Nitrogen Trioxide? A) N3O. B) NO3. C) N3O3. D) (NO)3. Show Answer Correct Answer: B) NO3. 7. Wax is an example of a ..... A) Nucleic acid. B) Lipid. C) Carbohydrate. D) Protein. Show Answer Correct Answer: B) Lipid. 8. The only sure evidence for a chemical reaction is: A) The production of one or more new substances. B) A color change. C) The formation of a gas. D) Changes in properties. Show Answer Correct Answer: A) The production of one or more new substances. 9. What is the charge of Mg? A) +1. B) 2. C) 3. D) -2. Show Answer Correct Answer: B) 2. 10. What is the simplest form of matter that retains an elements chemical identity? A) Atom. B) Quarks. C) Neutron. D) Electron. Show Answer Correct Answer: A) Atom. 11. Phase change from a solid to a gas. A) Condensation. B) Evaporation. C) Sublimation. D) Deposition. Show Answer Correct Answer: C) Sublimation. 12. The branch of chemistry that would study and develop new materials that in general do not contain carbon is ..... A) Organic Chemistry. B) Inorganic Chemistry. C) Biochemistry. D) None of above. Show Answer Correct Answer: B) Inorganic Chemistry. 13. How many atoms are present in 6.0 g of carbon? A) 6.02 x 1024 atoms. B) 3.01 x 1023 atoms. C) 7.04 x 1026 atoms. D) 1.55 x 1023 atoms. Show Answer Correct Answer: B) 3.01 x 1023 atoms. 14. What made this periodic table so different to others A) It had more elements. B) It had less elements. C) He left gaps in the table for undiscovered elements. D) It was simple. Show Answer Correct Answer: C) He left gaps in the table for undiscovered elements. 15. Tend to be brittle and shatter when hit with a hammer, poor conductors of heat and electricity, and low luster. A) Metals. B) Metalloids. C) Nonmetals. D) All of the above. Show Answer Correct Answer: C) Nonmetals. 16. What are Extensive Properties? 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) Changes that do not affect the identity of the substance. D) A property that depends on the type of matter in a sample, not the amount of matter. Show Answer Correct Answer: A) A property that depends on the amount of matter in a sample. 17. A compound can be physically separated into its elements. A) Always True. B) Sometimes True. C) Never True. D) None of above. Show Answer Correct Answer: C) Never True. 18. Electrons involved in bonding between atoms are A) Positively charged. B) Closest to the nucleus. C) Valence electrons. D) Inside the nucleus. Show Answer Correct Answer: C) Valence electrons. 19. What is the correct name for the following compound? Li2S A) Sulfuric lithate. B) Lithium sulfide. C) Lithium disulfide. D) Dilithium monosulfide. Show Answer Correct Answer: B) Lithium sulfide. 20. Solubility is the A) Ability to be scratched. B) Ability to be hammered into thin sheets. C) Ability to dissolve. D) How shiny it is. Show Answer Correct Answer: C) Ability to dissolve. 21. The branch of Chemistry that study all chemicals containing carbon is called A) Inorganic Chemistry. B) Organic Chemistry. C) Analytical Chemistry. D) Biochemistry. Show Answer Correct Answer: B) Organic Chemistry. 22. All changes in the state of matter of a substance requires A) Energy. B) Vibration. C) Permission. D) Water. Show Answer Correct Answer: A) Energy. 23. Which best explains the difference between an element and a compound? A) Elements cannot occur naturally, while compounds naturally occur. B) Elements have specific properties, while compounds do not have specific properties. C) Elements cannot be broken down, while compounds can because they join together in a specific pattern. D) Elements can be broken down, while compounds cannot because they are composed of two or more mixtures. Show Answer Correct Answer: C) Elements cannot be broken down, while compounds can because they join together in a specific pattern. 24. How many sigma bonds are there in acetylene molecule? A) 3. B) 1. C) 5. D) 2. Show Answer Correct Answer: A) 3. 25. What do we wear to protect our eyes in the lab? A) Gloves. B) Closed Toed Shoes. C) Goggles. D) Lab Aprons. Show Answer Correct Answer: C) Goggles. 26. This group of elements has properties that are opposite those of metals. A) Metalloids. B) Nonmetals. C) Transition metals. D) None of above. Show Answer Correct Answer: B) Nonmetals. 27. The identification of the components and composition of materials refers to ..... A) Analytical Chemistry. B) Biochemistry. C) Physical Chemistry. D) Organic Chemistry. Show Answer Correct Answer: A) Analytical Chemistry. 28. You place a rock on the electronic balance an it measures a mass of 12.38 g. The estimated digit is ..... A) 1. B) 3. C) 8. D) 2. Show Answer Correct Answer: C) 8. 29. What subatomic particles are found in energy levels outside of the nucleus and have a negative charge? A) Protons. B) Neutrons. C) Electrons. D) None of above. Show Answer Correct Answer: C) Electrons. 30. What is the name given to a set of controlled observations that test a proposed explanation? A) Theory. B) Hypothesis. C) Conclusion. D) Experiment. Show Answer Correct Answer: D) Experiment. 31. The ability to change into a different substance A) 360 ooga booga. B) Physical property. C) Volume. D) Chemical property. Show Answer Correct Answer: D) Chemical property. 32. Choose the correct facts A) Fats have low melting points. B) Oil has high melting points. C) Oil has a solid physical state. D) Fats have a high percentage of saturated fatty acids. Show Answer Correct Answer: D) Fats have a high percentage of saturated fatty acids. 33. Molecular compounds are different from ionic compounds by ..... A) Molecular compounds share electrons. B) Molecular compounds give or take electrons. C) Molecular compounds contain a metal. D) Molecular compounds are shiny and conductive. Show Answer Correct Answer: A) Molecular compounds share electrons. 34. An element has the mass number 12 and atomic number 6. The number of neutrons in it is: A) 6. B) 10. C) 8. D) 4. Show Answer Correct Answer: A) 6. 35. Convert 3045 cm to km A) .03045 km. B) 0.3045 km. C) 30.45 km. D) 3.045 km. Show Answer Correct Answer: A) .03045 km. 36. These elements are called semiconductors. A) Metals. B) Nonmetals. C) Metalloids. D) The guy at the front of a train. Show Answer Correct Answer: C) Metalloids. 37. How many elements are represented in the compound? Na2CO3 A) 1. B) 4. C) 2. D) 3. Show Answer Correct Answer: D) 3. 38. The atomic number tells you what? READ THE ANSWERS CAREFULLY A) Only the number of electrons. B) Only the number of protons. C) Only the number of neutrons. D) The number of both electrons and protons in an atom. Show Answer Correct Answer: B) Only the number of protons. 39. James observes that a yellow, solid substance has formed when he mixes two clear liquids together. He believes that a chemical change has taken place. Which of the following statements is true? A) James is correct because only a mixture was formed and no new substances. B) James is correct because a new substance with new properties was formed. C) James is incorrect because no chemical reaction occurred. D) James is incorrect because it was a physical change and not a chemical change. Show Answer Correct Answer: B) James is correct because a new substance with new properties was formed. 40. The B-F bond in BF3 (electronegativity for B is 2.0; electronegativity for F is 4.0) is A) Pure covalent. B) Polar covalent. C) Nonpolar covalent. D) Ionic. Show Answer Correct Answer: D) Ionic. 41. The Law of Multiple Proportions states A) When two elements combine with each other to form more than one compound, the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers. B) That every chemical compound contains fixed and constant proportions (by mass) of the elements that make up that compound. C) That matter is neither created nor destroyed, only changed during chemical reactions. D) None of above. Show Answer Correct Answer: A) When two elements combine with each other to form more than one compound, the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers. 42. What two substance are formed when an acid and alkali react together in equal amounts? A) Salt and water. B) Alkali and water. C) Acid and water. D) Acid and alkali. Show Answer Correct Answer: A) Salt and water. 43. He was the Greek philosopher who popularized atomism. A) Melitus. B) Leucippus. C) Epicurus. D) Democritus. Show Answer Correct Answer: C) Epicurus. 44. A change in the size, shape, form, or state of matter that does not change the matter's identity A) Physical change. B) Chemical property. C) Chemical change. D) Physical property. Show Answer Correct Answer: A) Physical change. 45. Diamond is an example of ..... A) Giant molecule. B) Simple molecule. C) Ionic compound. D) Metallic bond. Show Answer Correct Answer: A) Giant molecule. 46. What is the definition of saturated? A) No single bonds. B) Contains Carbon-Carbon double bond. C) All Carbon-Carbon bonds are double. D) All Carbon-Carbon bonds are single. Show Answer Correct Answer: D) All Carbon-Carbon bonds are single. 47. Calculate volume in milliliters of 100 g of coconut oil, which has a density of 0.92g/mL. A) 108.7 L. B) 108.7. C) 108.7 ml. D) 100 g/mL. Show Answer Correct Answer: C) 108.7 ml. 48. What is the formula formed from the atom U and W. [Proton number of U = 7; W = 9] A) UW3. B) UW. C) UW2. D) U2W. Show Answer Correct Answer: A) UW3. 49. Whatis the correct way to handle chemicals in the laboratory? A) Nevertouch or taste chemicals. B) Keepall chemicals in open containers. C) Keepopen flames within six inches of all chemicals. D) Wipeup chemical spills at the end of each experiment. Show Answer Correct Answer: A) Nevertouch or taste chemicals. 50. A combination of substances that are not chemically combined is called a(n) ..... A) Mixture. B) Compound. C) Physical. D) None of above. Show Answer Correct Answer: A) Mixture. 51. What is the meaning of Synthetic Rubber? A) Elastic in nature or elastomer polymer. B) Involves at least two different monomers. C) The long-chain molecule that is made from a combination of many repeating basic units. D) None of above. Show Answer Correct Answer: A) Elastic in nature or elastomer polymer. 52. A reaction in which energy is gained or absorbed. A) Exothermic. B) Physical. C) Endothermic. D) Chemical. Show Answer Correct Answer: C) Endothermic. 53. Which of the following solutions exactly neutralises 25.0 cm3 of 0.05 mol dm-3 barium hydroxide solution? A) 50.0 cm3 of 0.40 mol dm-3 hydrochloric acid. B) 12.5 cm3 of 0.05 mol dm-3 ethanoic acid. C) 25.0 cm3 of 0.10 mol dm-3 sulphuric acid. D) 12.5 cm3 of 0.20 mol dm-3 nitric acid. Show Answer Correct Answer: D) 12.5 cm3 of 0.20 mol dm-3 nitric acid. 54. Material produced from living or recently living plants or animals and their metabolic byproduct is? A) MSW. B) Biomass. C) Char. D) Biofuel. Show Answer Correct Answer: B) Biomass. 55. Combinations of 2 or more substances (elements and compounds) that are physically blended together. A) Element. B) Compound. C) Mixture. D) Substance. Show Answer Correct Answer: C) Mixture. 56. What kind of charge do electrons have? A) Negative. B) Positive. C) Explosive. D) No charge. Show Answer Correct Answer: A) Negative. 57. A pure substance made of the same type of atoms is called a(n) A) Atom. B) Molecule. C) Compound. D) Element. Show Answer Correct Answer: D) Element. 58. Applies chemistry to solve problems by developing chemicals for useful purposes. A) Chemical Engineer. B) Scientist. C) Chemist. D) Einstein. Show Answer Correct Answer: A) Chemical Engineer. 59. The amount of space that matter occupies A) Mass. B) Volume. C) Element. D) Density. Show Answer Correct Answer: B) Volume. 60. The density of pyrite is 5g/cm3 . This is an example of A) Extensive property. B) Intensive property. C) Chemical change. D) Chemical property. Show Answer Correct Answer: B) Intensive property. ← PreviousNext →Related QuizzesChemistry QuizzesScience QuizzesChemistry Quiz 1Chemistry Quiz 2Chemistry Quiz 3Chemistry Quiz 4Chemistry Quiz 5Chemistry Quiz 6Chemistry Quiz 7Chemistry Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books