Question

list
four observations that helpus to determine whether the chemical reaction has taken
place​

Answer 1

Answer:

Hey

the colour will be changed

the quantity will decrease or increase

that will hot or may be cold

Answer 2

Answer:

Following are the observations to determine whether the chemical reaction has taken place or not:

1. Change in colou.
2. Evolution of gas.
3. Changee in temperature.
4. Formation of precipitate.
5. Change in pH.