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Answer:
1.Changes in matter can have both positive and negative results. Explanation: An advantage of changes in the matter is that they can increase the efficiency of the matter to perform a task more effectively. However, it can also decrease the productivity of a matter in the beginning.
2.Physical properties include color, density, hardness, and melting and boiling points. A chemical property describes the ability of a substance to undergo a specific chemical change.19 Jul 2021