Pleas help thank you 6. It is the reaction that occurs when an inflammable substance is exposed to oxygen and this results in a change in the chemical properties of the substance. *
1 point
7. It refers to the process of using electricity to break a compound into simpler elements or substances. *
1 point
8. It refers to the change of state of matter from solid to gas without passing the liquid state. *
1 point
9. It is the process by which the state of matter changes from liquid to solid. *
1 point
10. It refers to a chemical reaction which is to spoil or to discolor the surface of a piece of metal. *
1 point
B. Directions: In 2-3 sentences, answer the question below comprehensively. (For scoring, please refer to the criteria given below)
Criteria:
Relevance - 3 points
Technicality - 2 points
5 points
Why are changes in matter important? *
5 points