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VladimirAG [237]
3 years ago
11

Pls help ASAP........ A student was roasting marshmallows over a fire. The student

Chemistry
1 answer:
Phantasy [73]3 years ago
5 0

Answer:

A chemical change

Explanation:

The marshmallow turning brown and bubbling implies that a chemical change has taken place.

For chemical changes to occur, we observe any of the following:

  • a new kind of matter is formed.
  • it is always accompanied by energy changes
  • the process is not easily reversible
  • it involves a change in mass
  • requires considerable amount of energy.

ii. Two signs that shows a chemical change has taken place is that:

  • bubbles are being formed as it is roasted and it implies that new substances have been formed.
  • also, significant amount of heat energy is supplied for the roasting.
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90% of precipitation of barium oxalate

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