Summary of the Learning Object
Solution, concentration, solubility, saturated solution, supersaturated solution.
The brick revolves around producing concentrated lemon juice (sugar and lemon) and linking this to the concept of the solution, calculating the concentration needed to utter this juice, and then calculating the mass of sugar needed to prepare different volumes of lemon juice and sugar with the same concentration. The labneh includes observing the factors needed to dissolve the lemon sucrose, such as stirring and heat, and what happens when adding more amounts of sugar than the solution can absorb in order to address the saturated and supersaturated solution.
Objectives
Production of lemon juice with sugar in a specific concentration helps to preserve it for long periods.
Items Needed
A worksheet that includes the procedures for preparing concentrated lemon juice and requires calculating the masses and volumes needed to prepare 100 ml of the same concentration.
Instructions for Students
Watch the following Film
Prepare samples of concentrated lemon juice and preparing a report describing how to produce the juice, its concentration, and a plan to produce and sell larger quantities of it.
Task #1: Concentrated lemon juice
In our school, we are thinking of selling natural juices in the canteen during the break period instead of processed juices, because they are more beneficial and less harmful. At first, lemon juice and concentrated sugar will be tried (in the period when lemon production increases), please prepare samples of lemon juice and sugar. Concentrate and provide the administration and the teachers with it to ensure the suitability of this juice for sale in the canteen, then prepare a report for the administration that includes the following:
• Describe the process of preparing juice, specifying the appropriate concentration for preserving juice for a long time, and the method of making it.
• The masses and volumes needed to prepare 100 packages (0.5 liters) of lemon juice and condensed sugar.
• The cost is for each 0.5 liter bottle of lemon juice and condensed sugar.
• Selling price per package.
• Juice logo and name.
• How to encourage students to buy this juice.