Subject chemistry Questions and answers Date: 25/7/2022 CHAPTER ONE: Q1: Define acids and bases? A1: a. An acid is a substance that dissolves in water to produce hydrogen ions (H+). b. A base is a substance that dissolve in water to produce hydroxide ion. Q2 Define acid and base based on bronsted lowry theory ? A2A cid is the substance that can transfer proton ion. Base is the substance that can accept proton. Q3 Define binary or non-oxy acid? A3: is the acid that contain only two elements. Q4 what are the types of acid based on the number of proton they can donate? A4: Monoprotic acid,diprotic acid and tri protic acid Q5 what are the types of acid and base based on their relative strength? A5: Acid strong acid weak acid. Base strong base,weak base and super base. Q6: What are the properties acid and base? A6: A. Acid have a sour taste and produce H+ ion B. Base have a bitter taste and produce hydroxide ion Q7: Define neutralization reaction? A7: Is the reaction b/w acid and base to produce salt and water. Q8: Define amphoteric substance? A8: Is a substance that acts as both acid and base. Q9: Define Salt? A9: Is the ionic compound that result from neutralization reaction. Q10: What are common uses of salts? A10: 1. Used in cooking food. 2. Used manufacture of soap Abdalla Kassim Omar (Abwaanka) Page 1 CHAPTER TWO: Q1: Define oxidation reaction and reduction? A1: a. Oxidation reaction: is the addition of oxygen. b. Reduction: is the loss of oxygen. Q2: Define redox reaction? A2: is the reaction that involves electron transfer. Q3: What are the types of redox reaction? A3: 1. Combination reaction. 2. Decomposition reaction. 3. Combustion reaction. Q4: Differentiate b/w oxidizing agent and reducing agent? A4: 1. Oxidizing agent: is the species that being reduced. 2. Reducing agent: Is a substance that being oxidized CHAPTER THREE: Q1: Define electrochemistry? A1: Is the branch of physical chemistry that studies relationship b/w chemical reaction and electricity. Q2: Differentiate spontaneous reaction and non-spontaneous reaction? A2: A. Spontaneous reaction: is the reaction that occur without an external agent. B. Non-spontaneous reaction: is the reaction that occur with external agent. Q3: What are the main types of Electro chemical process? A3: Electrolytic process and galvanic process Q4: Differentiate b/w electrolytic process and galvanic process? A4: 1. Electrolytic process: is the process electrical energy is converted to chemical energy. Subject chemistry Questions and answers Date: 25/7/2022 2. Galvanic process: is the process chemical energy converted to electrical energy. Q3: What are the two types of electro chemical cells? A3: Galvanic cell and electrolytic cell. Q4: What are the types of conductors? A4: Metallic conductor and Electrolytic conductor. Q5: What are the types of conductors electrolytes? A5: Strong electrolytes and weak electrolytes Q6: Define galvanic cell and voltaic cell? A6: Is the converts chemical energy to electrical energy. Q7: Define Electro potential? A7: Is the measure of tendency metal atoms to gain or loss electron. Q8: Define Electro motive force (cell potential)? A8: Is the difference b/w anode and cathode in a galvanic cell. Q9: Define electrolytic cell? A9: Is the device in which electrical energy is converted to chemical energy. Q10: Define electrolysis? A10: Is the process of decomposition of electrolyte into their constituent elements by passing electricity through it. Q11: What is the potential discharge? A11: Is the process of changing ions into free atoms GOOD LUCKY Abdalla Kassim Omar (Abwaanka) Page 3