1 Which salt is formed by strong acid and strong base? A Acidic salt B Basic salt C Neutral salt D Complex salt
2 Which indicator turns pink in basic solution? A Litmus B Methyl orange C Phenolphthalein D Universal indicator
3 Waseem is learning about oxides. He knows that oxides can be acidic, basic, amphoteric, or neutral. Which of the following is an example of a neutral oxide? A CO2 B Na2O C NO D Al2O3
4 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-
5 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
6 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
7 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
8 Which salt is formed by strong acid and weak base? A Neutral salt B Basic salt C Acidic salt D Double salt
9 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-
10 Patricia is studying the Bronsted-Lowry concept. She knows that a conjugate acid is formed when a base accepts a proton. In the reaction: NH3 + H2O → NH4+ + OH-, what is the conjugate acid? A NH3 B H2O C NH4+ D OH-
11 Julia is learning about oxides. She knows that neutral oxides do not react with acids or bases. Which of the following is a neutral oxide? A CO2 B SO2 C H2O D Na2O
12 Which salt is commonly known as table salt? A Potassium chloride B Sodium carbonate C Sodium chloride D Calcium chloride
13 Which acid reacts with metals to produce hydrogen gas? A Weak acids only B All acids C Strong acids D Dilute acids
15 Hina is studying the characteristic properties of acids. She knows that acids react with metals to produce hydrogen gas. What gas is produced when zinc reacts with hydrochloric acid? A Oxygen B Hydrogen C Chlorine D Carbon dioxide
16 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
17 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
19 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
20 Neutralization reaction occurs between: A Acid and acid B Base and base C Acid and base D Salt and water
21 Patricia is studying weak bases. She knows that weak bases have low dissociation in water. Which of the following is a weak base? A NaOH B KOH C NH3 D Ca(OH)2
22 The products of neutralization reaction are: A Salt and hydrogen B Salt and water C Acid and water D Base and water
25 George is studying strong bases. He knows that strong bases completely dissociate in water. Which of the following is a strong base? A NH3 B KOH C Fe(OH)3 D Al(OH)3
26 Julia is studying the properties of acids. She knows that acids turn blue litmus paper red. What color does hydrochloric acid turn blue litmus paper? A Blue B Red C Green D Yellow
27 Emma is learning about strong and weak acids. She knows that strong acids completely ionize in water, while weak acids partially ionize. Which of the following is a strong acid? A CH3COOH B H2CO3 C HCl D H2S
28 Emma is studying the Bronsted-Lowry concept. She knows that a base is a proton acceptor. In the reaction: H2O + NH3 → NH4+ + OH-, which species is the base? A H2O B NH3 C NH4+ D OH-
29 Ming is studying acidic oxides. He knows that acidic oxides react with bases to form salts and water. Which of the following is an acidic oxide? A CaO B MgO C SO2 D Na2O
30 Zara is studying the characteristic properties of acids. She knows that acids have a sour taste and turn blue litmus red. What is the pH of a typical acid solution? A Less than 7 B Greater than 7 C Equal to 7 D Between 8 and 10