This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry – Quiz 35 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 35 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Neutrons and protons make up the atom's ..... A) Nucleus. B) Electrons. C) Solvent. D) Solution. Show Answer Correct Answer: A) Nucleus. 2. Discovered the nucleus of the atom through the Gold Foil Experiment A) Rutherford. B) Chadwick. C) Thomson. D) Dalton. Show Answer Correct Answer: A) Rutherford. 3. What state of matter takes the entire shape of its container A) Solid. B) Liquid. C) Gas. D) Plasma. Show Answer Correct Answer: C) Gas. 4. An electron is A) Positively charged. B) Neutral. C) Negatively charged. D) None of above. Show Answer Correct Answer: C) Negatively charged. 5. An ..... reaction is when more energy is absorbed than is released. This energy can be in the form of light, heat, electricity, etc. A) Endothermic. B) Endergonic. C) Exothermic. D) Exergonic. Show Answer Correct Answer: B) Endergonic. 6. Theories are considered successful only if they A) Can be used to make accurate predictions. B) Can be stated in simple terms. C) Can be written in the form of an equation. D) Have been accepted by all scientists. Show Answer Correct Answer: A) Can be used to make accurate predictions. 7. How do you calculate mass number? A) Look at the atomic number. B) Add electrons and protons. C) Add protons and neutrons. D) Add neutrons and electrons. Show Answer Correct Answer: C) Add protons and neutrons. 8. One of several forms of a single element, which contains the same number of protons, but different numbers of neutrons A) Isotope. B) Ion. C) Orbital. D) Nucleus. Show Answer Correct Answer: A) Isotope. 9. Which is true about biomolecules? A) Biomolecules are non living molecules that contain carbon. B) Biomolecules are living molecules that contain carbon. C) Biomolecules are non living molecules that contain oxygen only. D) Biomolecules are living molecules that contain carbon only. Show Answer Correct Answer: B) Biomolecules are living molecules that contain carbon. 10. A + 2H2O $\rightarrow$ 2NaOH+ H2 How many grams of hydrogen are produced if 120 g of Na are available? A) 5.27 g. B) 2.6 g. C) 690 g. D) 45 g. Show Answer Correct Answer: A) 5.27 g. 11. An atom has 10 protons and a mass of 18. It has ..... neutrons A) 10. B) 18. C) 28. D) 8. Show Answer Correct Answer: D) 8. 12. Atoms in molecules share pairs of electrons when they make A) Covalent bonds. B) Ionic bonds. C) Hydrogen bonds. D) Polymers. Show Answer Correct Answer: A) Covalent bonds. 13. An object's weight is a measure of A) The force with which it is attracted by gravity. B) The pressure exerted on a scale. C) The amount of material per unit volume. D) The force causing the object to move. Show Answer Correct Answer: A) The force with which it is attracted by gravity. 14. What is the mole used for? A) To measure the amount of grams in a substance. B) To measure the amount of atoms or molecules in a substance. C) To measure the amount of energy in a substance. D) To measure the amount of bonding in a substance. Show Answer Correct Answer: B) To measure the amount of atoms or molecules in a substance. 15. What is the correct name of SO2? A) Monosulfur dioxide. B) Disulfur oxide. C) Sulfur dioxide. D) Disulfur dioxide. Show Answer Correct Answer: C) Sulfur dioxide. 16. Neutrons and protons are found in the A) Electron clound. B) Energy levels. C) Nucleus. D) None of above. Show Answer Correct Answer: C) Nucleus. 17. Which set of symbols represents atoms with valence electrons in the same electron shell or energy level? A) Ba, Br, Bi. B) Sr, Sn, I. C) O, S, Te. D) Mn, Hg, Cu. Show Answer Correct Answer: B) Sr, Sn, I. 18. Chemistry is (technically) the study of ..... A) Chemical solutions and solids. B) Matter and the changes it undergoes. C) The world around us. D) Chemical reactions. Show Answer Correct Answer: B) Matter and the changes it undergoes. 19. You should tie back long hair or baggy clothing A) When working with chemicals. B) When working with a Bunsen burner. C) When doing dissections. D) Any time you are working in the lab. Show Answer Correct Answer: D) Any time you are working in the lab. 20. Which one of the following sets of pH values is correct? A) Acid 5, neutral 7, alkaline 9. B) Acid 1, neutral 3, alkaline 5. C) Acid 7, neutral 8, alkaline 9. D) Acid 6, neutral 8, alkaline 10. Show Answer Correct Answer: A) Acid 5, neutral 7, alkaline 9. ← 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