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How does an acid affect an indicator?
Acids typically change the color of an indicator by donating a hydrogen ion (H+) to the indicator molecule, altering its structure and causing a shift in color. The specific color change depends on the pH range of the indicator and its chemical properties.
Is sodium bicarbonate an indicator?
No, sodium bicarbonate is not an indicator. It is a chemical compound commonly used for its buffering and antacid properties. Indicators are substances that change color in response to changes in pH levels.
Why do indicators in chemistry change color when placed in different substances?
Indicators change color due to a chemical reaction between the indicator and the substance that alters the light absorption properties of the indicator molecule. This change in absorption properties results in a different color being observed. Different substances interact differently with the indicator molecule, leading to the color change.
Is rock conductors or insulator?
Rock is generally an insulator. Note that the color of a rock is usually not a good indicator of is composition of properties.
Which two properties of a substance make it suitable to be used as an acid base indicator?
Two properties that make a substance suitable to be used as an acid-base indicator are: (1) it changes color at a specific pH range to indicate the presence of acids or bases, and (2) it exhibits a clear and easily distinguishable color change that is easily observable.
What is the only definite indicator that a reaction has taken place?
The only definite indicator that a reaction has taken place is the formation of a new substance with different chemical properties from the starting materials. This can be observed through changes in color, temperature, formation of a precipitate, or evolution of gas.
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.
Not a reliable indicator of a mineral's identity because it can be changed by weathering?
The color of a mineral is not a reliable indicator of its identity because weathering can alter or mask its true color. It is better to rely on other physical and chemical properties, such as hardness, cleavage, luster, and crystal form, to identify minerals accurately.
Is iron is an indicator?
its an indicator
What is and indicator?
A bank-and-turn indicator is an instrument in an aircraft cockpit which incorporates the functions of a bank indicator and a turn indicator.
Why does the indicator keep flashing?
Which Indicator?
What is a bank-and-turn indicator?
A bank-and-turn indicator is an instrument in an aircraft cockpit which incorporates the functions of a bank indicator and a turn indicator.
