Acetylsalicylic  acid,  also  known as  aspirin,  is  an  acetyl  derivate  of salicylic acid,  which is a  weak white  and crystalline  acidic  substance, that has a  melting point of  135-137oC.

Students…
• search for and classify information from a certain source
• work with PC application Word, table and pictures
• find connections and relations based on numeric data
• have good knowledge of the map of Europe

The students have prepared presentations about their favourite desserts and share them with the class. It will be a good idea if the teacher has prepared something sweet and treats the students at the end of the class. The students may have prepared their favourite dessert and brought it to school, so that they can share the presentation about the dessert and the dessert itself.

Definition: The molar heat of neutralizing represents the quantity of heat given up when a mole of a hydronium ion interacts with a mole of hydroxyl ion in a diluted solution.

“Let’s continue with the mysteries theme. I have some riddles for you.” The class is now divided into groups of 4-5 students, riddles are presented to the class one by one. Each group has to discuss the riddle in English and then the first group to find out what the answer is gets 1 point. If the riddle is too difficult for the students, the teacher gives hints. The winning group receives some present- something little, connected with the topic.

Some Information about luminol
IUPAC name: 5-amino-2,3-dihydro-1,4-phtalazinedione
Molar mass: 177,16 g/mol
Melting point: 319 – 320 °C