Question

Evidence of Change: Write a chemical equation that represents this experiment: 'The scientists took a bar of tuz and placed it into a container with 1 liter of brig. At first, the two substances didn't appear to mix well together. After 1 minute, the bar of tuz started to melt. The container heated up and was hot to the touch. They named the new product wophi. They turned the lights off to go home, and the entire room filled with light coming from the wophi. They decided not to eat the wophi on their journey to Earth but to use it instead as a night-light to help them see aboard their spacecraft in the dark.

Answer 1

A chemical equation that represents the experiment is tuz + brig → wophi. Evidence of a chemical change includes temperature changes, light emission, and the formation of a new product.

Step-by-step explanation:

A chemical equation that represents the experiment described is:

tuz + brig → wophi

In this reaction, the bar of tuz (represented by 'tuz') reacts with brig (represented by 'brig') to produce the new product wophi (represented by 'wophi').

Several pieces of evidence suggest that a chemical change occurred in this experiment:

1. The bar of tuz started to melt, indicating a temperature change.
2. The container heated up and was hot to the touch, which is another temperature change.
3. The room filled with light when the lights were turned off, indicating the emission of light.
4. The formation of a new product, wophi, with different properties than tuz and brig.