Question

reinforcement continued
class
date

1. use colored pencils to sketch and label the position of the liquid layers in the

tank on the diagram shown below.
diagram of a tank with a faucet

1. now that you know where the red chemical is inside the tank, how would you

remove it?

Explanation:

To remove the red chemical, we consider the principle of liquid layers (density - based separation). If the red chemical is in a lower layer (more dense), we can open the tap at the bottom (since the tap is at the base of the tank) to let the lower - density liquids above remain and drain the red chemical out. If it's in an upper layer, we might use a siphon or a pipette to extract it from the top, but given the tank has a bottom tap, assuming the red chemical is in a lower layer (common in such setups with layered liquids, like in chemical or physical science experiments with immiscible or miscible but density - differentiated liquids), using the bottom tap to drain the layer containing the red chemical when it's in the lower portion is practical.

Answer:

If the red chemical is in a lower - density layer, we can carefully pour off the upper layers. If it is in a higher - density (lower) layer, we can open the tap at the bottom of the tank to drain the layer that contains the red chemical, ensuring that we stop draining when the red chemical - containing layer is removed (by observing the color of the liquid coming out of the tap).