1. Models in Everyday and in Chemistry

2. Models
Chemistry is the study of materials both on the macroscopic and microscopic levels.
Chemists use models to try and explain their observations as they formulate theories.
As new data becomes available, chemists evaluate the model they are using and if necessary go on to refine it by making modifications.  

3. Activity Read through pages 27 in your “elemente chemie 9”
Make a table in your books to collect the information about different models.
Examples of possible representations
Limitations to the model
Atlas
Globus
Landkarte