IB MYP Chemistry : The atmosphere – extraction Practice Question IB MYP EXD. Math IB MYP STD. Math IB MYP 4-5 Chemistry IB MYP 4-5 Biology IB myp 4-5 Chemistry – Practice Questions- All TopicsTopic :The atmosphere -ExtractionTopic :The atmosphere- Weightage : 21 % All Questions for Topic : Characteristics of gases,Atmospheric composition,Testing and Treatment,Extraction,Emission and environmental Implications