This quiz works best with JavaScript enabled. Home > Science > Chemistry – Quiz 48 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 48 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What atom matches this electron configuration? [Xe] 6s25d9 A) Mercury. B) Gold. C) Platinum. D) Thallium. Show Answer Correct Answer: B) Gold. 2. Which biomolecule has sugars and starches? A) Lipids. B) Proteins. C) Carbohydrates. D) Nucleic Acid. Show Answer Correct Answer: C) Carbohydrates. 3. The breakdown of water into hydrogen and oxygen is A) Electrolysis. B) Composition. C) State of matter. D) None of above. Show Answer Correct Answer: A) Electrolysis. 4. What is the group and period of the element sodium? A) Group 1 Period 1. B) Group 7 Period 1. C) Group 4 Period 3. D) Group 1 Period 3. Show Answer Correct Answer: D) Group 1 Period 3. 5. An ionic bond is formed by A) Two or more positive ions combining. B) Two or more negative ions combining. C) A positive and a negative ion attracting each other. D) Sharing of a pair of electrons. Show Answer Correct Answer: C) A positive and a negative ion attracting each other. 6. Creature with only one cell A) Unicellular. B) Multicellular. C) Cell. D) Organism. Show Answer Correct Answer: A) Unicellular. 7. Taking Avogadro's number as 6.0 x 1023, what is the number of particles in 9 grams of H2O? A) $ 0.5\ X\ 10\uparrow23$. B) $ 3\ X10\uparrow23$. C) $ 1.8\ X\ 10\uparrow24$. D) $ 9\ x\ 10\ \uparrow23$. Show Answer Correct Answer: B) $ 3\ X10\uparrow23$. 8. In any chemical reaction, the quantities that are preserved are the ..... A) Number of moles and the volumes. B) Number of molecules and the volumes. C) Mass and the number of atoms. D) Mass and moles. Show Answer Correct Answer: C) Mass and the number of atoms. 9. Which element is present in all life forms? A) Adenosine triphosphate (ATP). B) Carbon. C) Molecule. D) Compound. Show Answer Correct Answer: B) Carbon. 10. Capillary action involves A) Cohesion and adhesion. B) Surface tension. C) Nonpolar covalent bonding. D) Ionic bonding. Show Answer Correct Answer: A) Cohesion and adhesion. 11. What biologist call the large moelcules that make up the "big 4" A) Monomer. B) Macromoleucles. C) Monosaccharide. D) Polysaccharide. Show Answer Correct Answer: B) Macromoleucles. 12. The monomer of polythene is A) Ethylene. B) Ethyl alcohol. C) Vinyl chloride. D) None of the above. Show Answer Correct Answer: A) Ethylene. 13. Avogadro's number is A) The number of particles in one mole of a substance. B) The number of grams in one mole of a substance. C) The volume of any gas in liters at STP. D) The volume of any gas in liters at RTP. Show Answer Correct Answer: A) The number of particles in one mole of a substance. 14. A physical change where the substance undergoes changes without changing its chemical composition A) Matter. B) Phase transition. C) Physical properties. D) Chemical properties. Show Answer Correct Answer: B) Phase transition. 15. Which element is located on the Periodic Table with other metals, but is a gas at room temperature A) He. B) O. C) H. D) Hg. Show Answer Correct Answer: C) H. 16. Increasing numbers on the periodic table indicate ..... A) Periodic. B) Valence electrons. C) Electron rings. D) Group. Show Answer Correct Answer: A) Periodic. 17. In a graduated cylinder containing several liquid layers, the least dense liquid is found A) Floating on the top. B) In the middle layer. C) Settled on the bottom. D) None of above. Show Answer Correct Answer: A) Floating on the top. 18. To change from moles of a given substance, to moles of the substance sought, one uses the ..... A) Ratio of the molar masses of the two substances. B) Balanced equation coefficients for the substances. C) Subscripts in the formulas for the substances. D) All the above. Show Answer Correct Answer: B) Balanced equation coefficients for the substances. 19. The nuclear particles which are assumed to hold the nucleons together are? A) Mesons. B) Electrons. C) Neutrons. D) Positrons. Show Answer Correct Answer: A) Mesons. 20. Area or sphere is referred as ..... A) Science. B) Consumer Products. C) Field. D) Composition. Show Answer Correct Answer: A) Science. ← PreviousNext →Related QuizzesChemistry Quiz 1Chemistry Quiz 2Chemistry Quiz 3Chemistry Quiz 4Chemistry Quiz 5Chemistry Quiz 6Chemistry Quiz 7Chemistry Quiz 8Chemistry Quiz 9Chemistry Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books