In an experiment, Seth was given a substance known as ammonium carbonate, (NH4)2CO3. Seth connected a bunsen burner to the gas valve using a gas hose. He turned on the gas valve and lit the bunsen burner. Using a test tube, Seth heated a piece of ammonium carbonate. Seth noticed the following:
- Condensation appeared on the sides at the top of the test tube.
- An ammonia smell was coming from the test tube.
Seth continued to light a wooden splint and stick it down the test tube and it immediately was extinguished.

Throughout this experiment, how many signs of chemical changes were observed and actual chemical changes took place?

A)4B)5C)6D)7

Chemical change shows the change in the chemical composition during an experiment. Seth observed 5 signs of chemical changes during the experiment.

what is a chemical change?

when a substance reacts chemically with another substance in order to form a new substance causes decomposition of that substance into two or more substances. The following reaction only takes place due to certain changes during the reaction known as chemical change.

Seth observes signs as follows

The burner is lighting.

The condensation appeared on the top of the test tube.

A smell was coming from the tube.

There is a light a wooden splint occurs.

when he lit the wooden splint it was immediately extinguished.

To learn more about the chemical change refer to the link ;

https://brainly.com/question/1161517