1.2 How can the empirical formula determined experimentally?
1.2 How can interconvert between empirical formula and percentage composition 5.1 How can you measure and calculate heat changes in a reaction? 15.2 How can you determine if a reaction is spontaneous or not? |
1.2 What is the definition of the empirical and molecular formula?
1.3 What is the ideal gas equation, what is it used for and what are the assumptions made when using the equation? 1.3 What is the ideal gas equation, what is it used for and what are the assumptions made when using the equation? 15.2 What is the difference between enthalpy and entropy? 6.1 How can you measure the rate of reaction? |
1.3 How can the mole calculations be used to determine the amount of needed ingredients in cocking recipes?
5.2 How can Hess's law be used to determine the enthalpy of reaction? 5.3 Why is there a difference in enthalpy in reaction when using Hess's law compared to using bond enthalpies? 15.1 In what why are energy cycles using Hess's law? 6.1 How can you change the rate of reaction? |
1.3 To what extent are mole calculations necessary when creating a cooking recipe?
1.3 To what extent is calculating the percentage yield helpful in industry? 5.1 To what extent is the knowledge and understanding of enthalpy necessary in cooking? 6.1 + 16.1 Is it important to know how to change the rate of reaction when you cook? |
Unit description
This unit is using mole calculations as a basis to help determine and calculate the rate by which products are produced and vice versa reactants being used up in the reaction, as well as the enthalpy of reactions. In this unit, we are using chemistry principles and applying them to cooking to understand what is really happening in the kitchen.
Transfer Goals
Students will be able to apply mol calculations to determine the amount of needed ingredients in cocking recipes.
Students will be able to apply the principle of kinetics and energetics to determine how long something needs to be cooked at which temperature.
Students will be able to apply the principle of kinetics and energetics to determine how long something needs to be cooked at which temperature.
Introduction to the topics in this unit - Essential ideas
1.2+1.3 Mole concept & reacting masses
1.2 The mole makes it possible to correlate the number of particles with a mass that can be measured. 1.3 Mole ratios in chemical equations can be used to calculate reacting ratios by mass and gas volume. |
5/15 Energetics
5.1 The enthalpy changes from chemical reactions can be calculated from their effect on the temperature of their surroundings. 5.2 In chemical transformations energy can neither be created nor destroyed (the first law of thermodynamics). 5.3 Energy is absorbed when bonds are broken and is released when bonds are formed. 15.1 The concept of the energy change in a single step reaction being equivalent to the summation of smaller steps can be applied to changes involving ionic compounds. 15.2 A reaction is spontaneous if the overall transformation leads to an increase in total entropy (system plus surroundings). The direction of spontaneous change always increases the total entropy of the universe at the expense of energy available to do useful work. This is known as the second law of thermodynamics. |
6/16 Kinetics
6.1 The greater the probability that molecules will collide with sufficient energy and proper orientation, the higher the rate of reaction. 16.1 Rate expressions can only be determined empirically and these limit possible reaction mechanisms. In particular cases, such as a linear chain of elementary reactions, no equilibria, and only one significant activation barrier, the rate equation is equivalent to the slowest step of the reaction. 16.2 The activation energy of a reaction can be determined from the effect of temperature on reaction rate. |
ConnectionsLearner profile
Communication: In this unit students will be able to communicate with their classmate and possibly other students around the world using crowdsourcing through the use of online tools such as blogging, vlogging and shared spreadsheets. ATL Thinking: In this unit students are focused on thinking critically and creatively how chemistry can apply to cooking. Information communication technology We will use an online website to create flipped classrooms and a blended learning environment. Tools such as blogging and vlogging are used to communicate with other students outside the classroom. Mind mapping is used to elicit reflection and revision. |