Cases of word usage

1) the chemical substance in the body that makes the heart beat faster etc, produced by anger, fear, excitement etc (adrenaline)

2) (of) a chemical substance able to prevent disease, especially by destroying germs (antiseptic)

3) the smallest unit of a chemical element (atom)

4) a chemical used for bleaching; (to cause something) to become white (bleach)

5) able to burn or destroy by chemical action (caustic)

6) a chemical substance symbol (Cl) used as a disinfectant etc (chlorine)

7) (to cause a material) to wear away slowly by chemical action or disease (corrode)

8) a chemical substance used to disinfect (disinfectant)

9) (deoxyribonucleic acid) the main chemical substance of all organisms (DNA)

10) a substance which has not so far been split up into a simpler form by ordinary chemical methods (element)