annaasbritni123 annaasbritni123

17-08-2020
Chemistry

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Mass and energy are conserved Question 13 options: A) only in chemical changes. B) always in physical changes and sometimes in chemical changes. C) only in physical changes. D) in chemical changes and physical changes.

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ariana8358 ariana8358

17-08-2020

Answer:

B

Explanation:

sometimes it can change chemically but not all the time.

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aouasanogo32 aouasanogo32

07-08-2021

Answer:

D) in chemical changes and physical changes.

Explanation:

Answer Link

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