Question

Which of the following observations can detect chemical changes ?
1)change in colour.
2)change in taste.
3)release of gas
4)all the above​

Answer 1

Answer:

1 is correct

Explanation:

Yes; new substances formed, as evidenced by the color changes and bubbles. Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color change, formation of a precipitate, formation of a gas, odor change, temperature change

Answer 2

All of the above. Thanks