Question

7. Fill in the blanks by using the words, physical or chemical.

Cow dung is collected and dried to make cow dung cake. This is a________change. It is then burned to be used as a fuel.

This is a______ change. Sometimes cow dung is also used to make biogas. This is a_______ change.​

Answer 1

Answer:

MARK AS BRAINLIEST

Explanation:

1.Chemical

2. Chemical

Answer 2

1st is chemical change. 2nd is also chemical change

Explanation:

because new substance is formed.