This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry – Quiz 31 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 31 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Anything which takes up space and has mass is A) Matter. B) A substance. C) Volume. D) Density. Show Answer Correct Answer: A) Matter. 2. What is the relative mass of a proton? A) 1/1840 amu. B) 9.11 x 10-28 g. C) 1.675 x 10-24 g. D) 1 amu. Show Answer Correct Answer: D) 1 amu. 3. The trace element that helps maintain the shape of some proteins by forming bonds is A) Cobalt. B) Iron. C) Sulfur. D) Sodium. Show Answer Correct Answer: C) Sulfur. 4. This is one job proteins do NOT have in the body A) Storing genetic information. B) Structure. C) Speed up chemical reactions. D) Transport things through cell membrane. Show Answer Correct Answer: A) Storing genetic information. 5. Starting Materials of a chemical reaction A) Coefficients. B) Moles. C) Reactants. D) Products. Show Answer Correct Answer: C) Reactants. 6. Suppose you have a glass of unknown liquid that you want to identify. It looks like milk, but you cannot be sure. How could it be determined? A) Taste the unknown liquid. B) Smell the unknown liquid. C) Guess the unknown liquid. D) None of the above. Show Answer Correct Answer: C) Guess the unknown liquid. 7. Which scientist described the existence of the neutron? A) Chadwick. B) Thomson. C) Rutherford. D) Bohr. Show Answer Correct Answer: A) Chadwick. 8. Connection between two atoms created when valence electrons are shared A) Covalent bond. B) Ionic bond. C) Hydrogen bond. D) James bond. Show Answer Correct Answer: A) Covalent bond. 9. What is the mole ratio in the following reaction:2CO + O2 $\rightarrow$ 2CO2 A) 2:1:2. B) 1:1:1. C) 1:2:1. D) Have no clue what a mole ratios is!!. Show Answer Correct Answer: A) 2:1:2. 10. The solute that falls out of a solution (like rain) A) Precipitate. B) Ice. C) Water. D) Water vapor. Show Answer Correct Answer: A) Precipitate. 11. How much stronger is a substance with a pH of 2 when compared to substance with a pH of 5? A) 10x. B) 100x. C) 1000x. D) 10, 000x. Show Answer Correct Answer: C) 1000x. 12. Which of the following is best classified as a homogeneous mixture? A) Pizza. B) Blood. C) Hot tea. D) Copper wire. Show Answer Correct Answer: C) Hot tea. 13. In the Lewis dot structure of Barium (Ba) this is how many dots you will draw A) 56. B) 2. C) 6. D) 11. Show Answer Correct Answer: B) 2. 14. Which biomolecule contains fats, oils, and waxes? A) Proteins. B) Nucleic Acid. C) Lipids. D) Carbohydrate. Show Answer Correct Answer: C) Lipids. 15. PH of water is A) 5. B) 6. C) 7. D) 8. Show Answer Correct Answer: C) 7. 16. The horizontal rows of the periodic table are called A) Periods. B) Columns. C) Groups. D) Families. Show Answer Correct Answer: A) Periods. 17. If body fluids are becoming too acidic, this means that there are excess ..... ions in the fluid? A) Sodium. B) Potassium. C) Hydroxyl. D) Hydrogen. Show Answer Correct Answer: D) Hydrogen. 18. Matter can be defined as anything that A) Has weight. B) Has mass and volume. C) Is uniform throughout. D) Exhibits both chemical and physical properties. Show Answer Correct Answer: B) Has mass and volume. 19. The nucleus of an atom is A) Negatively charged and has a high mass. B) Negatively charged and has a low mass. C) Positively charged and has a high mass. D) Positively charged and has a low mass. Show Answer Correct Answer: C) Positively charged and has a high mass. 20. An example of an extensive property is A) Color. B) Density. C) Volume. D) Temperature. Show Answer Correct Answer: C) Volume. ← 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