1)What is the common name of leucocytes ?


2)What is commonly known as H2O ?


3)Acetic acid is the main element of a product found in the kitchen. Which one ?


4)You could find alun stone at a pharmacist's or in a beauty shop. Why ?


5)What organ and what chromosome does daltonism affect ?


6)How do chemists obtain opium ?


7)Where does the name « rhesus » come from ?


8)Why can't you catch cystis fibrosis ?


9)Give a common example of emulsion.


10)What colour is sulphur ?


11)What colour are the following gems?Ruby,esmerald, sapphire, amethyst?


12)What is the hardest gem ?


13)What metal generates saturnism ?


14)What is the PH of water ?


15)What is the chemical element in salt ?


16)What are the 3 main elements in mustard ?


17)What is the only nut that has its fruit underground ?


18)What animal is the vector of Lyme disease ?


19)what poisonous plant killed Socrates ?


20)What animal was used to bleed people when they were ill ?