Which of the following choices is the most conclusive in determining whether a chemical reaction has taken place?

a change in color

a change in odor

a gas was formed

a change in the identity of the substance (s)

If different products are not created during a process, then a chemical reaction has not occurred. True or false?

Chemical equations provide:

the physical state of each reactant and product.

the ratios of reactants and products.

the chemical identity of the reactants and products.

all of the above information

Question

Chemistry

Alessandra Reilly

4 November, 01:20

Which of the following choices is the most conclusive in determining whether a chemical reaction has taken place?

a change in color

a change in odor

a gas was formed

a change in the identity of the substance (s)

If different products are not created during a process, then a chemical reaction has not occurred. True or false?

Chemical equations provide:

the physical state of each reactant and product.

the ratios of reactants and products.

the chemical identity of the reactants and products.

all of the above information

+5

Answers (1)

Know the Answer?

Jayce Clay · Answer 1

For the first question, i think the correct answer is the third option. When a gas is formed, it is the most conclusive in determining whether a chemical reaction has taken place given that none of your reactants is a gas.

For the second question, the statement is true.

For the third question, the correct answer is the last option.