This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry – Quiz 44 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 44 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A mixtures that has uniform composition A) Homogeneous mixtures. B) Heterogeneous mixtures. C) Atom. D) Compound. Show Answer Correct Answer: A) Homogeneous mixtures. 2. What type of protein promotes catalyze reactions such as synthesis, decomposition, energy productions and/or cellular reproduction? A) Structural proteins. B) Myoglobin. C) Antibodies. D) Enzymes. Show Answer Correct Answer: D) Enzymes. 3. As the concentration of hydrogen ions (H+) increases, the A) Solution becomes more basic. B) Solution becomes more acidic. C) PH rises. D) None of above. Show Answer Correct Answer: B) Solution becomes more acidic. 4. The atomic number of an element tells the number of ..... in the nucleus of an atom of that element A) Protons. B) Neutrons. C) Electrons. D) Isotopes. Show Answer Correct Answer: A) Protons. 5. The smallest part of an element that still has the elemental property A) Atom. B) Protons. C) Neutrons. D) Electrons. Show Answer Correct Answer: A) Atom. 6. Which is an outcome of modern research in chemistry? A) Technology. B) Paper. C) Increased land for food growth. D) The atom. Show Answer Correct Answer: A) Technology. 7. Balance the following:Fluorine and Aluminum oxide react to produce Aluminum fluoride and Oxygen A) 6, 2, 4, 3. B) 3, 4, 2, 6. C) 5, 1, 3, 2. D) 3, 2, 4, 3. Show Answer Correct Answer: A) 6, 2, 4, 3. 8. What is the other name or common name of alkanes? A) Olefins. B) Paraffins. C) Saccarines. D) Carbonates. Show Answer Correct Answer: B) Paraffins. 9. The energy needed to get a reaction started is the A) Adhesion energy. B) Activation energy. C) Cohesion energy. D) Chemical energy. Show Answer Correct Answer: B) Activation energy. 10. Hydrochloric acid A) HClO3. B) HClO2. C) HClO. D) HCl. Show Answer Correct Answer: D) HCl. 11. They are in the highest energy level of an atom and they are involved in chemical bonding. A) Bohr diagrams. B) Lewis structures. C) Valence electrons. D) Shells. Show Answer Correct Answer: C) Valence electrons. 12. An element with a charge is an A) Atom. B) Acid. C) Electron. D) Ion. Show Answer Correct Answer: D) Ion. 13. Water consists of ..... A) Oxygen and carbon. B) Hydrogen and oxygen. C) Hydrogen and carbon. D) None of above. Show Answer Correct Answer: B) Hydrogen and oxygen. 14. How many electron can occupy the p orbital? A) 2. B) 6. C) 10. D) 14. Show Answer Correct Answer: B) 6. 15. Which of the following has the lowest boiling point? A) CaCl2. B) Cl2. C) N2. D) PH3. Show Answer Correct Answer: C) N2. 16. A scientist is working in the lab, with compounds containing carbon. She is most likely working in the field of A) Organic. B) Inorganic. C) Analytical. D) Physical. Show Answer Correct Answer: A) Organic. 17. DNA and RNA are two types of A) Carbohydrates. B) Nucleic acids. C) Lipids. D) Proteins. Show Answer Correct Answer: B) Nucleic acids. 18. Which of the following intermolecular forces increase with increasing molecular mass? A) Dipole-dipole forces. B) Hydrogen bonding. C) Ion-dipole forces. D) London dispersion forces. Show Answer Correct Answer: D) London dispersion forces. 19. It is an atom with the same number of protons but different number of neutrons. A) Atomic mass. B) Atomic Number. C) Isotopes. D) None of above. Show Answer Correct Answer: C) Isotopes. 20. Nail polish remover contains? A) Acetone. B) Benzene. C) Acetic acid. D) Petroleum ether. Show Answer Correct Answer: A) Acetone. ← 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