Which of the following is a reliable way to observe that a chemical change has occurred when two substances come in contact with one another?

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02-09-2022
Biology

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Which of the following is a reliable way to observe that a chemical change has occurred when two substances come in contact with one another?

Sagot :

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samueladesida43 samueladesida43 · Answer 1 · 2022-09-07T12:10:42-04:00

The ways to observe that a chemical change has occurred when two substances come in contact with one another are as follows:

Color Change.
Production of an odor.
Change of Temperature.
Evolution of a gas (formation of bubbles)
Precipitate (formation of a solid)

What is a chemical change?

A chemical change is a any process in which reactants are changed into products by the breaking or creation of chemical bonds.

A chemical change is opposed to a physical change in the sense that a physical change affects only the form of a chemical substance, but not its chemical composition.

The ways to observe if a chemical change has occured are as follows:

Color Change.
Production of an odor.
Change of temperature.
Evolution of a gas (formation of bubbles)
Precipitate (formation of a solid)

Learn more about chemical changes at: https://brainly.com/question/23693316

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hannahfloresco05 hannahfloresco05 · Answer 2 · 2022-09-20T12:35:35-04:00

Answer:

(Question) Which of the following is an example of only a physical change?

(Answer) dry ice becoming vapor

(Question) Which of the following demonstrates a chemical change?

(Answer) iron (Fe) reacting to water((H2O)) and oxygen(O) to form iron oxide(Fe2O3)

(Question) Which of the following is a reliable way to observe that a chemical change has occurred when two substances come in contact with one another?

(Answer) conduct a test to determine the chemical makeup of the molecules

(Question) Which of the following happens during a chemical change but does not happen during a physical change?

(Answer) Atoms of one or more substances rearrange into a new substance.

(Question) Which of the following example demonstrates the reversibility of a chemical change?

(Answer) recharging batteries

Explanation:

i just finished the quick check. enjoy

Sagot :

What is a chemical change?

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