How Do The Elements Interact

ທັງໝົດGIFສະຕິກເກີມີມ
a man stands in front of a white board with the words " how do all the parts work together " written on it
    a picture of a girl with the words matti stop using emojis to react messages on the bottom
    a row of chemical compounds including kci pb no3 bacl2 cuso4
    a cartoon drawing of a building with a door and boxes on the ground
    a young man wearing glasses is sitting at a table .