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Ede4ka [16]
3 years ago
10

HELPPPP I WILL GIVE YOU BRAIN THINGG WHATEVER ITS CALLED

Chemistry
1 answer:
n200080 [17]3 years ago
6 0

Notes, Pitches, Articulation, Phrasing, and Musical Extras.

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4.A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change. Absolute confirmation of a chemical change can only be validated by chemical analysis of the products!

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6.n simple terms, the endothermic reactions absorb energy from the surrounding that is in the form of heat. On the other hand, an exothermic reaction releases energy into the surrounding of the system.

hope this help plz give me a thxs and brainlyest and a five star thx and you welcome let me know if this helped

Explanation:

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