2 According to Lewis theory, a base is an: A Electron pair donor B Electron acceptor C Proton donor D Neutron donor
3 Quinn is learning about alkalis. He knows that all alkalis are bases, but not all bases are alkalis. Which of the following is a base but not an alkali? A NaOH B KOH C Cu(OH)2 D Ca(OH)2
4 Oliver is studying weak acids. He knows that weak acids have low ionization in water. Which of the following is a weak acid? A HCl B HNO3 C H2SO4 D H2CO3
5 Which acid is produced in our stomach? A Nitric acid B Sulfuric acid C Hydrochloric acid D Acetic acid
6 Chloe is studying the Bronsted-Lowry concept. She knows that an acid is a proton donor and a base is a proton acceptor. In the reaction: HCl + H2O → H3O+ + Cl-, what is the acid? A HCl B H2O C H3O+ D Cl-
7 According to Lewis theory, an acid is an: A Electron donor B Proton donor C Electron pair acceptor D Proton acceptor
8 Which base is used in whitewashing? A Calcium oxide B Calcium hydroxide C Sodium hydroxide D Potassium hydroxide
9 Nora is studying the Bronsted-Lowry concept. She knows that an acid is a proton donor. In the reaction: H2SO4 + H2O → H3O+ + HSO4-, which species is the acid? A H2SO4 B H2O C H3O+ D HSO4-
11 According to Arrhenius, an acid is a substance that produces: A OH⁻ ions in water B H⁺ ions in water C Salt only D Electrons
12 Rachel is studying the characteristic properties of acids. She knows that acids react with metals to produce hydrogen gas. What gas is produced when magnesium reacts with sulfuric acid? A Oxygen B Hydrogen C Carbon dioxide D Sulfur dioxide
14 Khalid is studying acidic oxides. He knows that acidic oxides react with water to form acids. Which of the following is an acidic oxide? A CaO B MgO C CO2 D Na2O
15 Tina is learning about the concept of acids and bases. She knows that according to the Bronsted-Lowry concept, an acid is a proton donor. Which of the following is an acid in the reaction: H2O + CO3^2- → HCO3- + OH-? A H2O B CO3^2- C HCO3- D OH-
16 Ibrahim is studying the properties of bases. He knows that bases react with acids to form salts and water. What is this reaction called? A Redox reaction B Neutralization reaction C Precipitation reaction D Decomposition reaction
17 Sam is studying the properties of bases. She knows that bases react with acids to form salts and water. What is the salt formed when sulfuric acid reacts with potassium hydroxide? A KCl B K2SO4 C CH3COOK D KNO3
19 Uma is studying strong and weak acids. She knows that strong acids are better conductors of electricity than weak acids. Which of the following is a strong acid? A CH3COOH B HNO3 C H2CO3 D H2S
20 Hina is learning about the characteristic properties of acids. She knows that acids react with bases to form salts and water. What type of reaction is this? A Combination B Decomposition C Neutralization D Displacement
21 Xia is studying the neutralization reaction. She knows that in a neutralization reaction, an acid and a base react to form salt and water. What is the salt formed when nitric acid reacts with calcium hydroxide? A CaCl2 B Ca(NO3)2 C CaSO4 D CH3COO Ca
22 Yusuf is learning about alkalis. He knows that alkalis are soluble bases that release OH- ions in water. Which of the following is not an alkali? A NaOH B KOH C Cu(OH)2 D Ca(OH)2
23 Ahmed is studying the properties of acids. He knows that acids produce hydrogen ions (H+) when dissolved in water. According to the Arrhenius concept, which of the following is an acid? A NaOH B HCl C NaCl D NH3
24 Oliver is studying the Arrhenius concept of acids and bases. He knows that an acid is a substance that produces H+ ions in water. Which of the following produces H+ ions in water? A HNO3 B KOH C NaCl D NH4Cl
25 Which acid is used in car batteries? A Nitric acid B Hydrochloric acid C Sulfuric acid D Phosphoric acid