Science, asked by pateltanu092gmailcom, 1 month ago

by the help of which observation, can it be known that any chemical reaction has taken place?
$\\ please \: answer \: it \: fast \\ it \: is \: urgent$
it is of class 10

Answers

Answered by mandhanavansh

3

Following are the observations to determine whether the chemical reaction has taken place or not:

Change in colou

Evolution of gas

Changee in temperature

Formation of precipitate

Change in pH

Answered by prashanthsingh658

2

Answer:

sodium chloride with hydrogen +h2o

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