This quiz works best with JavaScript enabled. Home > Science > Chemistry > 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. The number of electrons presents in H+ is A) 0. B) 1. C) 2. D) 3. Show Answer Correct Answer: A) 0. 2. CH4 is a/an ..... compound A) Ionic. B) Covalent. C) Molecular Solid. D) Electrovalent. Show Answer Correct Answer: B) Covalent. 3. What effect do enzymes have on the rate (speed) of a reaction? A) Increase the speed. B) Monitor the speed. C) Decrease the speed. D) Have no effect on the speed. Show Answer Correct Answer: A) Increase the speed. 4. The maximum number of covalent formed by nitrogen is A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: D) 4. 5. If you change a substance into a new substance ..... A) Partial Change. B) Physical Change. C) Chemical Change. D) Freezing. Show Answer Correct Answer: C) Chemical Change. 6. What is the maximum number of electrons found in the innermost (first) shell. A) 8. B) 3. C) 5. D) 2. Show Answer Correct Answer: D) 2. 7. G of beryllium (Be) contains how many moles? A) 0.25 mol. B) 4.0 mol. C) 45 mol. D) 320 mol. Show Answer Correct Answer: B) 4.0 mol. 8. If the atomic mass of carbon is 12, 1 mole of pure carbon would have a mass A) 6g. B) 6 mol. C) 12 g. D) 12 mol. Show Answer Correct Answer: C) 12 g. 9. The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is +3 A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: D) 4. 10. Matter are anything that A) Has mass but doesn't occupies space. B) Only has mass. C) Has mass and occupies space. D) None of above. Show Answer Correct Answer: C) Has mass and occupies space. 11. A substance that speeds up the rate of a chemical reaction is called A) A catalyst. B) A lipid. C) A molecule. D) An element. Show Answer Correct Answer: A) A catalyst. 12. An atom or group of atoms that has gained or lost one or more electrons and is now either positively or negatively charged A) Isotope. B) Ion. C) Orbital. D) Nucleus. Show Answer Correct Answer: B) Ion. 13. In this equation, CuCl2 + NaOH $\rightarrow$ Cu(OH)2 + NaClWhich product is insoluble? A) Copper(II) hydroxide. B) Sodium chloride. C) Sodium hydroxide. D) Copper(II) chloride. Show Answer Correct Answer: A) Copper(II) hydroxide. 14. For people, the function of cellulose is to promote A) Energy production between meals. B) Peristalsis. C) Loss of heat in hot weather. D) Retention of heat in cold weather. Show Answer Correct Answer: B) Peristalsis. 15. Which of the following has the symbol C? A) Carbon. B) Chlorine. C) Calcium. D) Copper. Show Answer Correct Answer: A) Carbon. 16. Two or more atoms chemically bonded A) Compound. B) Mixture. C) Element. D) Molecule. Show Answer Correct Answer: D) Molecule. 17. The metals of Group 1 are commonly called the A) Transition metals. B) Alkaline earth metals. C) Lanthanides. D) Alkali Metals. Show Answer Correct Answer: D) Alkali Metals. 18. The amount of matter that an object has is its A) Mass. B) Volume. C) Density. D) Substance. Show Answer Correct Answer: A) Mass. 19. Moles of carbon (C) is equal to how many grams? A) 6.0 grams. B) 12.0 grams. C) 8.0 grams. D) 14.0 grams. Show Answer Correct Answer: A) 6.0 grams. 20. What determines the reactivity of an element? A) Number of protons. B) Number of neutrons. C) Number of electrons. D) Number of valence electrons. Show Answer Correct Answer: D) Number of valence electrons. ← 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