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.

Topic: the cardiovascular system (the normal structure and functioning of the heart, the circulation of blood in the human body, from the heart to the rest of the body and back to the heart)
Lesson Aim: understanding and learning the structure of the heart and of its mechanisms, as well as the circulation of blood
Type of lesson: acquiring new information
Types of interaction: teacher-students, student-student.

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.

29. In Scotland New Year’s is sometimes celebrated with First-Footing, which involves:
a. Friends or family members going to each other's houses with a gift of whisky and sometimes a lump of coal
b. Friends or family members going to each other’s houses to sing carols
c. Friends or family members going to each other’s houses to put up decorations.

Lesson Objectives:
1. to make students familiar with the “Passé simple” (Present Perfect)
2. to use ICT as a successful tool when teaching (in the case of a foreign language)
3. to develop vocabulary and grammar
4 . to encourage cooperation

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