This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry Basics > Chemistry – Quiz 26 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 26 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Molecular formula for the oxide of calcium is A) CaO. B) Ca2O. C) None. D) None of above. Show Answer Correct Answer: A) CaO. 2. When heat is removed/released, the temperature of matter decreases and 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. 3. Which statement about fats is correct? A) Fats are solid at room temperature. B) Fats are mainly unsaturated. C) Fats are healthier than oils. D) Most fats are plant based. Show Answer Correct Answer: A) Fats are solid at room temperature. 4. What is Hydrogenation? & Is it good for us? A) Hydrogen atoms converting a solid fat into liquid/NO. B) Hydrogen atoms converting a solid fat into liquid/YES. C) Hydrogen atoms converting an oil into a solid form/ NO. D) Hydrogen atoms converting an oil into a solid form/ YES. Show Answer Correct Answer: C) Hydrogen atoms converting an oil into a solid form/ NO. 5. Study of chemicals, that in general, do not contain carbon is called A) Organic chemistry. B) Inorganic chemistry. C) Biochemistry. D) Chemistry. Show Answer Correct Answer: B) Inorganic chemistry. 6. What is the center of the atom called A) Neutron. B) Nucleus. C) Electron. D) Proton. Show Answer Correct Answer: B) Nucleus. 7. The ..... is the sum of the protons and the neutrons in an atom. A) Atomic Number. B) Mass Number. C) Protons. D) Neutrons. Show Answer Correct Answer: B) Mass Number. 8. Chemical formula of quick lime is: A) CaO. B) Ca(OH)2. C) CaCO3. D) CO2. Show Answer Correct Answer: A) CaO. 9. Which among the following is an element? A) Brass. B) Bronze. C) Silver. D) Stainless steel. Show Answer Correct Answer: C) Silver. 10. What are the smallest parts of pure substancesthat cannot be broken down intosimpler substances? A) Mixtures. B) Elements. C) Atoms. D) Molecules. Show Answer Correct Answer: C) Atoms. 11. Which lab tool might you use to measure the volume of a liquid? A) Electric scale. B) Bunsen burner. C) Test tube. D) Graduated cylinder. Show Answer Correct Answer: D) Graduated cylinder. 12. This ranges 7 on a Ph scale A) Neutral. B) Base. C) Acid. D) None of above. Show Answer Correct Answer: A) Neutral. 13. What is the volume of 150. grams of lead if it has a density of 11.3 g/cm 3? A) 13.3 g. B) 13.3 cm3. C) .075 g. D) 1695 cm3. Show Answer Correct Answer: B) 13.3 cm3. 14. Chewing food to break it down into smaller particles represents a ..... change, but the changing of starch into sugars by enzymes in the digestive system represents a ..... change. A) Chemical then Physical. B) Physical then Chemical. C) Both Physical. D) Both Chemical. Show Answer Correct Answer: B) Physical then Chemical. 15. What is a pure substance made of two or more elements chemically combined in a set ratio. Ex:CO2 has a set ratio of 1:2, meaning for every one carbon atom there are two oxygen atoms. A) Element. B) Compound. C) Mixture. D) Salad. Show Answer Correct Answer: B) Compound. 16. A university plans to map all the genes on human chromosomes A) Basic research. B) Applied research. C) Technological research. D) None of above. Show Answer Correct Answer: A) Basic research. 17. Is 20 g greater than, less than, or equal to 2 kg? A) Greater than. B) Less than. C) Equal to. D) None of above. Show Answer Correct Answer: B) Less than. 18. A basketball has more mass than a golf ball because: A) The basketball takes up more space. B) The basketball contains more matter. C) The golf ball contains a different kind of matter. D) The golf ball has an indefinite composition. Show Answer Correct Answer: B) The basketball contains more matter. 19. A chemical property that refers to the energy released when a compound undergoes burning. A) Reactivity. B) Flammability. C) Chemical Stability. D) Heat of Combustion. Show Answer Correct Answer: D) Heat of Combustion. 20. Physical properties are A) Properties that can be observed without changing the identity of the substance. B) Properties that describe how a substance changes into a completely different substance. C) Properties that we can only observe with our eyes. D) Properties that we need special tools to observe. Show Answer Correct Answer: A) Properties that can be observed without changing the identity of the substance. ← 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