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How can you tell that a chemical reaction occurred from the copper sulfate?
You can tell that a chemical reaction occurred with copper sulfate if there is a visible color change in the solution, such as the solution turning blue or green. Additionally, if there is a formation of a solid precipitate, like copper hydroxide forming as a blue-green solid at the bottom of the solution, it indicates a chemical reaction has taken place.
Why is a indicator's reaction in acids and bases a chemical change?
When an indicator is added to an acid or base, it undergoes a chemical reaction with the hydrogen or hydroxide ions present in the solution. This reaction causes a change in the color of the indicator, indicating a shift in the pH of the solution. Since a new substance with different properties is formed during this reaction, it is considered a chemical change.
Is an indicator's reaction in acids and bases a chemical or physical change?
The indicator's reaction in acids and bases is a chemical change because it involves a change in the chemical structure of the indicator molecule due to its interaction with the ions present in the acid or base solution. This results in a change in color, which is a visible manifestation of the chemical reaction taking place.
What is the chemical reaction between lugols solution and a starch?
The reaction between Lugol's solution (iodine) and starch forms a blue-black complex. Iodine molecules fit into the helical structure of starch molecules, producing this characteristic color change. This reaction is commonly used to test for the presence of starch in a solution.
Is changing of color a sign of chemical change?
The change of color may be a sign of a chemical reaction.
How can you tell that a chemical reaction occurred from the copper sulfate?
You can tell that a chemical reaction occurred with copper sulfate if there is a visible color change in the solution, such as the solution turning blue or green. Additionally, if there is a formation of a solid precipitate, like copper hydroxide forming as a blue-green solid at the bottom of the solution, it indicates a chemical reaction has taken place.
Why is a indicator's reaction in acids and bases a chemical change?
When an indicator is added to an acid or base, it undergoes a chemical reaction with the hydrogen or hydroxide ions present in the solution. This reaction causes a change in the color of the indicator, indicating a shift in the pH of the solution. Since a new substance with different properties is formed during this reaction, it is considered a chemical change.
Is an indicator's reaction in acids and bases a chemical change?
No, an indicator's reaction in acids and bases is a physical change. Indicators change color based on the pH of the solution they are in, but the chemical composition of the indicator remains the same.
Is an indicator's reaction in acids and bases a chemical or physical change?
The indicator's reaction in acids and bases is a chemical change because it involves a change in the chemical structure of the indicator molecule due to its interaction with the ions present in the acid or base solution. This results in a change in color, which is a visible manifestation of the chemical reaction taking place.
What happens after dipping a substance into a pH solution?
When a substance is dipped into a pH solution, it will either change color due to a chemical reaction with the solution, or it may not show any visible change if the substance is neutral. This process helps determine the acidity or basicity of the substance based on the pH solution's color change.
Why is phenolphthalein used as an indicator in chemical experiments?
Phenolphthalein is used as an indicator in chemical experiments because it changes color depending on the acidity or alkalinity of a solution. This makes it easy to visually determine the endpoint of a reaction or the pH level of a solution.
Is hydrochloric acid and phenolphthalein a chemical change?
When HCl and phenolphthalein are mixed, a chemical reaction occurs leading to a change in the color of the solution (from pink to colorless). This is a chemical change as new substances are formed with different properties than the original substances.
A change in color when two solutions are mixed together is a clue that what has taken place?
A change in the color of a solution is a sign thatthere is a chemical change happening. A chemical change happens when two substances combine forming another substance. It can also happen when two or more substances decompose.
When an indicator changes color during a titration it is a sign that?
the endpoint of the titration has been reached. This change in color indicates a chemical change in the solution due to the reaction between the titrant and the analyte. It helps to visually signal when the reaction is complete.
What is the chemical reaction between lugols solution and a starch?
The reaction between Lugol's solution (iodine) and starch forms a blue-black complex. Iodine molecules fit into the helical structure of starch molecules, producing this characteristic color change. This reaction is commonly used to test for the presence of starch in a solution.
Is changing of color a sign of chemical change?
The change of color may be a sign of a chemical reaction.
Where do howler monkeys get their color?
from chemical reaction
