This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry Basics > Chemistry – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 1 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock? A) 7 mL. B) 7 g/cm3. C) 28 g/cm3. D) 1/7 g/cm3. Show Answer Correct Answer: B) 7 g/cm3. 2. Phosphoric acid is a weak acid that A) Has a pH value of 1.0. B) Cannot neutralise alkaline solution. C) Changes red litmus paper to blue. D) Ionises partially in water to produce hydrogen ions. Show Answer Correct Answer: D) Ionises partially in water to produce hydrogen ions. 3. The volume of 1.7g of NH3 at STP (273K, 1atm) is A) 1.7L. B) 2.24L. C) 2.8L. D) 3.4L. Show Answer Correct Answer: B) 2.24L. 4. Mendeleev arranged the Periodic Table according to? A) Name. B) Atomic mass. C) Atomic number. D) Charge. Show Answer Correct Answer: B) Atomic mass. 5. Both animal fats and plant oils are made up of glycerol and A) Phospholipids. B) Fatty acids. C) Polar molecules. D) Saturated fats. Show Answer Correct Answer: B) Fatty acids. 6. In an exothermic reaction, energy is ..... A) Released. B) Absorbed. C) Stored. D) Doubled. Show Answer Correct Answer: A) Released. 7. Two or more elements bonded together are: A) A mixture. B) A substance. C) An atom. D) A compound. Show Answer Correct Answer: D) A compound. 8. A student mixes apple juice, water, and cinnamon together. Did a chemical reaction occur? A) Yes, because the apple juice changed the color of the water. B) Yes, because the temperature stayed the sam. C) No, because the properties stayed the same. D) Yes, because dissolving is always a chemical reaction. Show Answer Correct Answer: C) No, because the properties stayed the same. 9. The simplest form of matter with a unique set of properties A) Element. B) Compound. C) Mixture. D) Solution. Show Answer Correct Answer: A) Element. 10. What is an atom which has gained or last electrons called? A) Isotope. B) Atom. C) Ion. D) Balanced. Show Answer Correct Answer: C) Ion. 11. Mole A) Floating or sinking when compared to water. B) Conditions of 0.00$^ \circ$C and 1 atm pressure. C) A reaction that ABSORBS energy in the form of heat. D) The SI base unit used to measure the amount of a substance. Show Answer Correct Answer: D) The SI base unit used to measure the amount of a substance. 12. Which of the following is a chemical property of a substance? The substance ..... A) Conducts electricity. B) Reacts with hydrochloric acid. C) Scratches glass. D) Is more dense than water. Show Answer Correct Answer: B) Reacts with hydrochloric acid. 13. Which term defines the smallest sample of matter that still has the same properties? This is what makes up everything. A) An atom. B) A bond. C) An element. D) A molecule. Show Answer Correct Answer: A) An atom. 14. The largest part of a solution is called the A) Solution. B) Solvent. C) Solute. D) Colloid. Show Answer Correct Answer: B) Solvent. 15. The symbol of gold is ..... A) Go. B) Au. C) Gd. D) A. Show Answer Correct Answer: B) Au. 16. What property of water causes water molecules to attract to the sides of a graduated cylinder? A) PH. B) Cohesion. C) Adhesion. D) Heat capacity. Show Answer Correct Answer: C) Adhesion. 17. If an element has more electrons than protons, it will have a ..... charge. A) Positive. B) Negative. C) Neutral. D) None of above. Show Answer Correct Answer: B) Negative. 18. What determines the number of protons in an atom? A) Atomic number. B) Atomic mass. C) Atomic weight. D) Oxidation number. Show Answer Correct Answer: A) Atomic number. 19. Ba A) Compound. B) Element. C) Mixture. D) None of above. Show Answer Correct Answer: B) Element. 20. What was the first synthetic organic insecticide A) DTD. B) TTD. C) TTT. D) DDT. Show Answer Correct Answer: D) DDT. Next →Related QuizzesChemistry QuizzesScience QuizzesChemistry 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