Chemical reactions and periodic classification - One Line Questions

1. What is the valency of Chlorine in HCl? — 1
2. What is the valency of Oxygen in most of its compounds? — 2
3. What is the atomic mass of Helium? — 4.003 amu
4. What is the atomic number of Sodium? — 11
5. Which of the following is an example of a decomposition reaction? — CaCO3 -> CaO + CO2
6. Which of the following is an example of a single displacement reaction? — Zn + CuSO4 -> ZnSO4 + Cu
7. What is the atomic number of Carbon? — 6
8. What is the atomic number of Oxygen? — 8
9. What is the atomic number of Neon? — 10
10. Which of the following is a strong acid? — Hydrochloric acid
11. Which family of elements is known for being highly reactive and having one valence electron? — Alkali metals
12. In the periodic table, elements are arranged in order of increasing: — Atomic number
13. What is the chemical formula for methane? — CH4
14. What is the chemical formula for calcium carbonate? — CaCO3
15. Identify the type of reaction: CuO + H2 -> Cu + H2O — Redox reaction
16. Which type of reaction involves the transfer of ions between two compounds? — Double displacement
17. Which of the following is an endothermic reaction? — Photosynthesis
18. What type of bond is formed between a metal and a non-metal? — Ionic bond
19. Identify the type of chemical reaction: A + B -> AB — Combination reaction
20. What is the IUPAC name for H2O? — Dihydrogen monoxide
21. Which of the following is a characteristic of metals? — Tendency to lose electrons
22. What is the common name for the compound CH4? — Methane
23. Which element is known as the 'universal solvent'? — Water
24. Which element is characterized by the symbol 'Fe'? — Iron
25. Which element is in Group 17 and Period 3? — Chlorine
26. Which group in the periodic table contains the alkali metals? — Group 1
27. Which group contains the halogens? — Group 17
28. The horizontal rows in the periodic table are called: — Periods
29. Which of the following is a balanced chemical equation for the synthesis of water from hydrogen and oxygen? — 2H2 + O2 -> 2H2O
30. What is the chemical formula for sulfuric acid? — H2SO4
31. Which of the following is a redox reaction? — Zn + 2HCl -> ZnCl2 + H2
32. Which noble gas has the highest atomic number? — Radon
33. A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change is called a(n): — Catalyst
34. The tendency of an atom to attract a bonding pair of electrons is called: — Electronegativity
35. What is the chemical formula for common salt? — NaCl
36. What does the law of conservation of mass state in a chemical reaction? — Mass is neither created nor destroyed.
37. What is the process where a solid directly changes into a gas? — Sublimation
38. What is the chemical formula for ammonia? — NH3
39. Which element is the most electronegative? — Fluorine
40. What is the chemical symbol for Potassium? — K
41. Which period does Sodium (Na) belong to in the periodic table? — Period 3
42. The vertical columns in the periodic table are called: — Groups
43. The process of adding oxygen or removing hydrogen is called: — Oxidation
44. What is the symbol for the element Silver? — Ag
45. Which element has the symbol 'Au'? — Gold
46. Which element has the electronic configuration 2, 8, 1? — Sodium
47. Which element is a metalloid? — Silicon
48. What is the state of matter for most elements in Group 18 (noble gases) at room temperature? — Gas
49. What is the common name for the compound C6H12O6? — Glucose
50. Which of the following is a non-metal that exists as a diatomic molecule? — Nitrogen
All One Line Questions
E-Book Chemical reactions and periodic classification Online Test Chemical reactions and periodic classification Question Bank Chemical reactions and periodic classification