This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Chemistry > Chemistry Basics > Chemistry – Quiz 16 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 16 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A student pours two different solutions into a glass beaker. Which of the following would indicate that a chemical reaction took place between two solutions? A) A change in color of a solution. B) The formation of a precipitate. C) A change in temperature. D) All of the above. Show Answer Correct Answer: D) All of the above. 2. Heat flows from ..... to ..... objects A) Warmer to warmer. B) Cooler to cooler. C) Cooler to warmer. D) Warmer to cooler. Show Answer Correct Answer: D) Warmer to cooler. 3. What is a molecule? A) A group of atoms that are held together by chemical bonds. B) Basic particles of all things living and non-living. C) Forms cell membrane. D) Molecule that carries information. Show Answer Correct Answer: A) A group of atoms that are held together by chemical bonds. 4. Which one of the following Would the following result in a displacement reaction? A) Iron with Zinc Sulphate. B) Iron with magnesium chloride. C) Gold with silver nitrate. D) Magnesium with iron chloride. Show Answer Correct Answer: D) Magnesium with iron chloride. 5. CH4 + 2O2 $\rightarrow$ CO2 + XH2O. What coefficient must be placed in front of water to balance the equation? A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 6. A student is conducting an experiment on the effectiveness of solid aluminum hydroxide as an antacid. Which measuring tool would most likely be used to measure out several 7.0 gram samples used during the investigation? A) Electronic balance. B) Beaker. C) Spring scale. D) Graduated cylinder. Show Answer Correct Answer: A) Electronic balance. 7. The symbol "H" represents which element? A) Helium. B) Hopium. C) Hexagen. D) Hydrogen. Show Answer Correct Answer: D) Hydrogen. 8. What device would you use to measure the mass of an object? A) None of these. B) Spring scale. C) Bathroom scale. D) Balance. Show Answer Correct Answer: D) Balance. 9. As you and your lab partner mix two clearsolutions during a science experiment, a red solid forms. What is this solidcalled? A) A condensate. B) A precipitate. C) A particulate. D) A hydrate. Show Answer Correct Answer: B) A precipitate. 10. If a chemical splashes in your eyes, you should immediately use the A) Emergency Eyewash Station. B) Emergency Shower. C) Chemical Spill Kit. D) Escape Route. Show Answer Correct Answer: A) Emergency Eyewash Station. 11. How many sig figs are there? 0.00400 A) 3. B) 1. C) 5. D) 6. Show Answer Correct Answer: A) 3. 12. In a periodic table, rows are called A) Families. B) Periods. C) Columns. D) Groups. Show Answer Correct Answer: B) Periods. 13. A solution with a pH of 3.6 would be ..... A) Acid. B) Base. C) Neutral. D) Acid and Base. Show Answer Correct Answer: A) Acid. 14. Fe is the chemical symbol for the element. A) Iron. B) Francium. C) Lead. D) Flourine. Show Answer Correct Answer: A) Iron. 15. Applies the theories of physics to the study of reactions and properties of matter. A) Analytical chemistry. B) Physical chemistry. C) Organic chemistry. D) Biochemistry. E) Inorganic chemistry. Show Answer Correct Answer: B) Physical chemistry. 16. State of matter that has no definite shape, but has a definite volume A) Gas. B) Liquid. C) Solid. D) None of above. Show Answer Correct Answer: B) Liquid. 17. Which of the following is NOT a result of high-fat diet A) Improved circulation. B) High Cholesterol. C) Obesity. D) Heart Disease. Show Answer Correct Answer: A) Improved circulation. 18. What is the correct formula for the compound Phosphorus tribromide? A) PBr3. B) PBr. C) P3Br. D) Br3P. Show Answer Correct Answer: A) PBr3. 19. The mass of $ CO_2$ is $ 44g$ . Then the molar mass of $ 1\ mole$ of $ CO_2$ will be: A) 44. B) 22. C) 88. D) None of above. Show Answer Correct Answer: A) 44. 20. How many elements are in NaCl? A) 1. B) 4. C) 2. D) 3. Show Answer Correct Answer: C) 2. 21. A mixture that is so evenly mixed you can't see the parts. Such as Kool-Aid A) Homogeneous Mixture. B) Heterogeneous Mixture. C) Pure Substance. D) None of above. Show Answer Correct Answer: A) Homogeneous Mixture. 22. Most suitable element and most widely accepted standard unit for the measurement of atomic mass A) Oxygen. B) Carbon. C) Nitrogen. D) None of above. Show Answer Correct Answer: B) Carbon. 23. How do covalent bonds form? A) Donating & receiving valence e-between atoms. B) Opposite slight charges attract each other between compounds. C) Sharing valence e-between atoms. D) Scientists are still not sure how they form. Show Answer Correct Answer: C) Sharing valence e-between atoms. 24. What charge does the nucleus have and why? A) Positive-the neutrons do not have a charge. B) Positive-the neutrons and protons are positively charged particles. C) Neutral-the neutral charge dominates the positive charge. D) Neutral-electrons cancel out the positive charge of the atom. Show Answer Correct Answer: A) Positive-the neutrons do not have a charge. 25. If a mixture has components you can see it is a ..... A) Homogeneous mixture. B) Compound. C) Heterogeneous mixture. D) Solution. Show Answer Correct Answer: C) Heterogeneous mixture. 26. How many carbon atoms are in ethane? A) 4. B) 3. C) 1. D) 2. Show Answer Correct Answer: D) 2. 27. What is the molar mass of table salt (NaCl)? A) 22.990 g/mol. B) 35.453 g/mol. C) 58.443 g/mol. D) 116.886 g/mol. Show Answer Correct Answer: C) 58.443 g/mol. 28. What is the name of the compound AlPO4? A) Aluminum phosphide. B) Aluminum phosphoroxide. C) Aluminum phosphate. D) Aluminum phosphite. Show Answer Correct Answer: C) Aluminum phosphate. 29. Which conditions are required to obtain a good yield of a carboxylic acid when ethanol is oxidized using potassium dichromate(VI), K2Cr2O7(aq)? I. Add sulfuric acidII. Heat the reaction mixture under refluxIII. Distill the product as the oxidizing agent is added A) I and II only. B) II and III only. C) I and III only. D) I, II and III. Show Answer Correct Answer: A) I and II only. 30. A combination that can be separated by physical processes is a ..... A) Glucose. B) Pure Substance. C) Element. D) Mixture. Show Answer Correct Answer: D) Mixture. 31. The chemical formula of lead sulphate is: A) Pb2(SO4)3. B) Pb(SO4)2. C) Pb2SO4. D) PbSO4. Show Answer Correct Answer: D) PbSO4. 32. How many electrons should Carbon have around its Lewis dot model? A) 1. B) 4. C) 5. D) 3. Show Answer Correct Answer: B) 4. 33. Whenclassifying a solution of KoolAid, sugar, and water, a student found it to bewhich of the following? A) A homogeneous mixture. B) A compound. C) An element. D) A heterogeneous mixture. Show Answer Correct Answer: A) A homogeneous mixture. 34. An electron has a ..... charge. A) Negative. B) Positive. C) Neutral. D) None of above. Show Answer Correct Answer: A) Negative. 35. The columns are called families. What characteristics do chemical families share? A) Same state of matter. B) Same number of valence electrons. C) Same physical properties. D) Same number of neutrons. Show Answer Correct Answer: B) Same number of valence electrons. 36. Which of the following is NOT an example of a molecular formula? A) H2O. B) NH3. C) O2. D) B. Show Answer Correct Answer: D) B. 37. What type of chemical reaction is this one? Ca + MgCl2 $\rightarrow$ CaCl2 + Mg A) Decomposition. B) Single Replacement. C) Combustion. D) Synthesis. Show Answer Correct Answer: B) Single Replacement. 38. G of sugar is a measure of what? A) Weight. B) Inertia. C) Mass. D) Gravity. Show Answer Correct Answer: C) Mass. 39. Which group or family of the periodic table will not naturally form compounds with any atom? A) Alkaline Earth Metals. B) Nobel Gases. C) Alkali Metals. D) Halogens. Show Answer Correct Answer: B) Nobel Gases. 40. Which molecule exhibits optical isomerism? A) 2-iodo-2-methylpropane. B) 2-iodobutane. C) 3-iodopentane. D) 1, 3-diiodopropane. Show Answer Correct Answer: B) 2-iodobutane. 41. Which branch of Chemistry would study rubbing alcohol (C3H8O) and its reactions? A) Biochemical. B) Organic. C) Physical. D) Inorganic. Show Answer Correct Answer: B) Organic. 42. Which does silicon dioxide (SiO2) represent? A) Element. B) Homogeneous mixture. C) Compound. D) Heterogeneous mixture. Show Answer Correct Answer: C) Compound. 43. Which molecule contains an ester group? A) CH3COOCH3. B) OHCCH2CHO. C) CH3COCH2CH2OH. D) CH3CH2COOH. Show Answer Correct Answer: A) CH3COOCH3. 44. A ..... is a combination of many different elements not chemically combined. A) Compound. B) Mixture. C) Chemical. D) Particle. Show Answer Correct Answer: B) Mixture. 45. Organic compounds made only of the elements carbon and hydrogen are called ..... A) Carbohydrates. B) Hydrocarbonates. C) Carbohydrogens. D) Hydrocarbons. Show Answer Correct Answer: D) Hydrocarbons. 46. The ..... are either elements or compounds which are present prior to a chemical reaction. A) Products. B) Metals. C) Reactants. D) Nonmetals. Show Answer Correct Answer: C) Reactants. 47. Which of the following is not true about chemical reactions? A) The reactants and products contain the same types of atoms. B) The reactants and products have different properties. C) The reactants and products are the same substances. D) The reactants and products are different substances. Show Answer Correct Answer: C) The reactants and products are the same substances. 48. When elements chemically combine, which best describes the resulting compound? A) It has the same properties as the uncombined elements. B) It has different types of matter. C) It has different properties from the uncombined elements. D) It has different ratios of atoms. Show Answer Correct Answer: C) It has different properties from the uncombined elements. 49. An ion with a positive charge. A) Isotope. B) Anion. C) Cation. D) Electrode. Show Answer Correct Answer: C) Cation. 50. Compounds are different than elements because compounds are- A) A combination of two or more elements. B) B)not able to be broken down into parts. C) A pure substance, elements are not. D) Made from the same type of atoms. Show Answer Correct Answer: A) A combination of two or more elements. 51. Chemicals that act as biological catalysts by speeding up reactions in living things are called A) Inhibitors. B) Reactants. C) Fuels. D) Enzymes. Show Answer Correct Answer: D) Enzymes. 52. Can be observed without changing into a nother substance A) Solubility. B) Ooga booga. C) Physical property. D) Chemical Property. Show Answer Correct Answer: C) Physical property. 53. What is the formula for calcium carbonate? A) Ca3CO. B) Ca2(CO3)2. C) CaCO. D) CaCO3. Show Answer Correct Answer: D) CaCO3. 54. How many oxygen (0) atoms are in Al(NO3)3? A) 9. B) 13. C) 15. D) 6. Show Answer Correct Answer: A) 9. 55. The amount of matter or stuff in an object A) Force. B) Volume. C) Matter. D) Mass. Show Answer Correct Answer: D) Mass. 56. What type of element usually has a dullappearance and is generally NOT a good conductor of heat or electricity? A) Metal. B) Metalloid. C) Nonmetal. D) Solid. Show Answer Correct Answer: C) Nonmetal. 57. The variable that you measure is the- A) Independent Variable. B) Repeated Trial. C) Dependent Variable. D) Constant. Show Answer Correct Answer: C) Dependent Variable. 58. Matter that flows but has a definite volume A) Plasma. B) Solid. C) Liquid. D) Gas. Show Answer Correct Answer: C) Liquid. 59. The strong forces of attraction between the positive and negative regions of molecules are called A) Dipole-dipole forces. B) Orbital forces. C) London forces. D) Lattice forces. Show Answer Correct Answer: A) Dipole-dipole forces. 60. When the temperature of matter decreases the particles ..... A) Speed up and move farther apart. B) Speed up and move closer together. C) Slow down and move farther apart. D) Slow down and move closer together. Show Answer Correct Answer: D) Slow down and move closer together. ← 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