氧化劑

氧 = 气 + 羊 : Maud Younger (y) gave the sheep (羊) a balloon (气) inside of the anglepod (ang3), but unfortunately it doesn't float because it is filled with oxygen (氧).

化 = 亻 + 匕 : Helga Horse and Rosa Luxemburg conduct an experiment in the ashram's bathroom. Using a transformer, they melt a ladle.

剂 = 刂 + 齐 : Joan of Arc (ji) is preparing a dose (剂) of her medicine in the space station's bathroom (Ø4). Usually she uses a gong as a nice and flat surface to prepare her medicine, but today only the drum is ready (齐). She distributes her medicine evenly and nicely on the flat surface using a kitchen knife (刂).