Ineed with 1,2,3 questions on chemistry

1. Physical Intensive

2. Chemical

3. Physical Extensive

Explanation:

1 is physical intensive because it can be known without undergoing a chemical reaction therefore its physical and the colour doesn't depend on the amount of the substance there therefore it is intensive.

2 is chemical because it must undergo a chemical reaction in order to know.

3 is physical because it can be known without undergoing a chemical reaction and it is extensive because it is dependant on the amount of substance being measured.

practical process described pest part of scientific investigation.

because practical knowledge is powerful then therotical knowledge.