This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry – Quiz 57 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 57 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which type of reaction will feel cold? A) Exothermic. B) Exergonic. C) Endothermic. D) None of these. Show Answer Correct Answer: C) Endothermic. 2. C12H22O11 how many many elements? A) 45. B) 2. C) 3. D) None, it's a compound. Show Answer Correct Answer: C) 3. 3. Mrs. Franklin ismaking chocolate suckers for the class. She takes blocks of chocolate and heatsthem over a fire. The melting chocolate is an example of a- A) Graphic change. B) Physical change. C) Chemical change. D) Reactional change. Show Answer Correct Answer: B) Physical change. 4. Which chemical equation represents a neutralisation reaction? A) Mg + H2SO4 $\rightarrow$ MgSO4 + H2. B) ZnCl2 + 2HNO3 $\rightarrow$ Zn(NO3)2 + 2HCl. C) 2HCl + CaCO3 $\rightarrow$ CaCl2 + CO2 + H2O. D) NaOH + CH3COOH $\rightarrow$ CH3COONa + H2O. Show Answer Correct Answer: D) NaOH + CH3COOH $\rightarrow$ CH3COONa + H2O. 5. Which salt is not decomposed when heated strongly? A) Zinc nitrate. B) Ammonium chloride. C) Potassium carbonate. D) Copper(II) sulphate. Show Answer Correct Answer: C) Potassium carbonate. 6. Who created the periodic table A) Mendeleev. B) Diamond. C) Einstein. D) None of above. Show Answer Correct Answer: A) Mendeleev. 7. In this type of bond electrons are shared by two non-metals A) Ionic. B) Covalent. C) Subatomic. D) None of above. Show Answer Correct Answer: B) Covalent. 8. How can mixtures best be described? A) Made of one element. B) Made of different elements that are all chemically bonded together. C) Made of different elements that are not all chemically bonded together. D) Made of substances that are chemically reactive. Show Answer Correct Answer: C) Made of different elements that are not all chemically bonded together. 9. What is a liquid? A) A substance that flows freely but is of constant volume. B) A substance or matter in a state in which it will expand freely. C) Firm and stable in shape. D) None of above. Show Answer Correct Answer: A) A substance that flows freely but is of constant volume. 10. An intensive property that refers to the measure of the resistance of a mineral to scratching. A) Length. B) Volume. C) Luster. D) Hardness. Show Answer Correct Answer: D) Hardness. 11. Which is NOT a chemical change? A) Leaves changing colors in the fall. B) Iron rusting. C) Digesting Lunch. D) Ice Melting. Show Answer Correct Answer: D) Ice Melting. 12. Which of the following chemical equations represents aneutralisation reaction? A) 2HNO3 + PbCO3 $\rightarrow$ Pb(NO3)2 + CO2 + H2O. B) 4HCl + MnO2 $\rightarrow$ MnCl2 + Cl2 + 2H2O. C) 2HCOOH + Mg $\rightarrow$ Mg(HCOO)2 + H2. D) H2SO4 + CuO $\rightarrow$ CuSO4 + H2O. Show Answer Correct Answer: D) H2SO4 + CuO $\rightarrow$ CuSO4 + H2O. 13. The molecular formula for Nitric acid A) HNO3. B) HNO2. C) HNO. D) None of above. Show Answer Correct Answer: A) HNO3. 14. What are the two main types of energy? A) Endothermic and exothermic. B) Spontaneous and nonspontaneous. C) Potential and kinetic. D) Entropy and enthalpy. Show Answer Correct Answer: C) Potential and kinetic. 15. Who developed the modern day periodic table of elements? A) Darwin. B) Shultz. C) Hooke. D) Mendeleev. Show Answer Correct Answer: D) Mendeleev. 16. In the following unbalanced equation, what coefficients would have to go in the blanks (left to right) in order for it to become balanced? ..... Al + ..... HCl $\rightarrow$ ..... AlCl3 + ..... H2 A) 1:3:1:2. B) 3:2:1:2. C) 6:2:2:3. D) 2:6:2:3. Show Answer Correct Answer: D) 2:6:2:3. 17. An atomic mismatch within the region where two grains meet which is called A) Grain border. B) Grain divide. C) Grain boundary. D) None of above. Show Answer Correct Answer: C) Grain boundary. 18. The basic particle from which all elements are made. A) Element. B) Mixture. C) Acid. D) Atom. Show Answer Correct Answer: D) Atom. 19. To separate a mixture of soil and water what separation method is used? A) Filtration. B) Distillation. C) Chromatography. D) Evaporation. Show Answer Correct Answer: A) Filtration. 20. An atom or molecule which has gained or lost one or more of its valence electrons A) Covalent Bond. B) Chemical Formula. C) Ion. D) Compound. Show Answer Correct Answer: C) Ion. ← 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