<p> Points from Unit 2 Chemistry – Exam Preparation.</p><p>Precipitation Reactions:</p><p> What is a precipitation reaction?</p><p> What is produced?</p><p> What are the defining features of a precipitation reaction?</p><p> What is the difference between a precipitation reaction and other reactions?</p><p> Where do you go to find out what things are soluble and insoluble?</p><p> How do you write an ionic equation?</p><p> What things get deleted in an ionic equation?</p><p> Do you always get a precipitate?</p><p> What state is a precipitate?</p><p> Why are precipitates insoluble?</p><p>Stoichiometry:</p><p> What is the most important thing to consider when making a sandwich (chemical reaction)?</p><p> What are the molar concentration equations?</p><p> What are the properties of a primary standard?</p><p> What are the correct rinsing procedures for all glassware? How does incorrect rinsing affect your results?</p><p> What is a standard solution?</p><p> What is an aliquot?</p><p> What is a titre?</p><p> What tools are used for a titration and what do they do?</p><p> What value remains constant in a dilution?</p><p> What is volume/volume mass/volume mass/mas stoic?</p><p> What is the difference between actual and theoretical yield? Factors that affect yield?</p><p> What does an indicator show?</p><p> In an equation what represents the mole ratio?</p><p> How do you determine what is in XS and what is LR!!!?!?!?!?</p><p> What is stoichiometry?</p><p> What do you use to predict the amount of product? (the LR or the XS)  What units for M? m? n? V? N?</p><p> Can you convert from mol/L to g/L?</p><p>Acids and Bases:</p><p> What is a Bronsted Lowry definition of an acid and a base?</p><p> What are the properties of acids and bases?</p><p> What safety precautions should be taken when handling acids (AAATW)</p><p> What is the difference between strength and concentration?</p><p> What is a polyprotic acid?</p><p> How do you determine a conjugate acid base pair? How do they differ?</p><p> What is an amphiprotic substance?</p><p> What is the equation to determine pH?</p><p> What is the equation to determine the concentration of H+? [H+]?</p><p> What is the ionic product of water? What is its equation? What temperature is it true for?</p><p> What are the 5 reactions of acids?</p><p> What is pH?</p><p> Indicators and Litmus paper for acids and bases</p><p> What is the relationship between pH and concentration of hydronium?</p><p> What happens to pH of acids and bases when they are diluted?</p><p> What is the difference between the strength of organic and inorganic bases and why?</p><p> Give an example of 2 strong acids, 2 strong bases, 2 weak acids and 2 weak bases.</p><p> Write an equation to show how a strong acid ionises in water</p><p> Write an equation to show how a strong base dissociates</p><p> Write equations for weak acids and bases in water</p><p> What are some examples of common acids/bases in everyday life</p><p> What is the definition of neutral, acidic and basic!!!?!?!?! Can water ever be acidic/basic?</p><p> What happens when you add an acid to a base?</p><p> What is hydrolysis?</p><p> When are acids acids and bases bases? Can an acid act as an acid if there is no base?</p><p> What is ionisation?  What is dissociation?</p><p> How do you know the formula for the salt that is formed in an acid base reaction?</p><p> What products are formed when water reacts with itself, what do we use it explain?</p><p>Redox:</p><p> What is a redox reaction?</p><p> What is transferred in a redox reaction?</p><p> What is oxidation?</p><p> What is the purpose of a salt bridge in a galvanic cell? Give an example of a suitable solution for the salt bridge and why that is a good choice.</p><p> How do you balance both simple and complex redox reactions? (water, H+, electrons etc)</p><p> What are the trends in oxidant and reductant strength in the periodic table and why?</p><p> How are oxidation numbers formulated? What are the exceptions to the oxidation number rules?</p><p> What is a reductant?</p><p> What are the internal and external circuits in a galvanic cell?</p><p> Why are some things better oxidants/reductants than others?</p><p> Describe the direction of ion flow in the salt bridge</p><p> By looking at oxidation numbers how can you tell oxidation/reduction/redox reaction has taken place?</p><p> At the cathode/anode what reaction occurs and what charge is on the electrode?</p><p> What electrode loses mass, which gains mass in a galvanic cell?</p><p> By looking at the electrochemical series how can you predict if a spontaneous reaction will occur? Can you explain why/why not????</p><p> In what direction does oxidant/reductant strength increase/decrease in the electrochemical series?</p><p> Why won’t some reactions occur?</p><p> Under what conditions is the electrochemical series made? (pressure for gases, temperature, concentration)</p><p> What is a redox conjugate pair?</p><p> Describe the direction of electron flow in the external circuit.</p><p> An OIL RIG Cat</p><p> What is an electrolyte? What must it contain?</p><p> What are other types of galvanic cells? (not solid electrode types)  Can you draw a fully labelled galvanic cell? Include half reactions?</p><p> How do you combine two half equations into an overall equation?</p><p> What is reduced in a reduction reaction? What is oxidised in an oxidation reaction?</p><p>Gas Laws:</p><p> What units must the pressure be in when using the general gas equation? And other units?</p><p> What does molar volume mean?</p><p> What is SLC and STP?</p><p> What is the general gas equation?</p><p> What are the properties of gases?</p><p> What are the three gas laws?</p><p> How do you convert units of pressure and volume and temperature?</p><p> What temperature scale is used for calculations in the topic of gas laws?</p><p> What is the combined gas equation and why is it called that?</p><p> What is the kinetic molecular theory?</p><p> Don’t forget limiting and excess questions with gas laws!</p><p> Under what conditions can the “volume ratio” be employed?</p><p> What is the gas constant?</p><p> What is the difference between real and ideal gases?</p><p> What is pressure? Explain pressure.</p><p> Can you draw a graph of each of the gas laws?</p><p> Can you offer an explanation for all three gas laws? Regarding the kinetic molecular theory.</p><p> What is the molar volume formula?</p><p> Do gases react with each other? Ok Chanuka.</p><p> Do gases lose energy when they collide?</p><p> Luke, Yunus, Shixin, Ben, Shern, Anthony, John, Kelly, Nisha, Shannan, Sophie, Chanuka, Dostol, Saman?</p>