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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.
When acids are added to rocks containing a carbonate bubbles form is this evidence of a physical change or chemical change?
This is evidence of a chemical change. When acids react with carbonate minerals in rocks, they create gas (CO2), which leads to the formation of bubbles. This reaction results in the formation of new substances, indicating a chemical change.
How is toasting bread chemical or physical change?
Toasting bread is a chemical change because the heat causes a chemical reaction in the bread, leading to the browning and change in flavor. This involves the Maillard reaction, where the sugars and amino acids in the bread react to form new compounds.
What is the name of the chemical that changes colour in acids and bases?
The chemical that changes color in acids and bases is called an indicator. Common indicators include litmus, phenolphthalein, and bromothymol blue. These substances change color in response to pH changes in a solution.
Why don't all acids turn indicators pink?
Not all acids turn indicators pink because the color change of an indicator depends on the pH of the acid. Different indicators have different color changes at different pH levels. Some indicators change color in acidic solutions, while others change in basic solutions.
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.
Do acids effect indicators?
Yes, acids can affect indicators by changing their color. Indicators are substances that change color in response to the acidic or basic nature of a solution. Acids can cause indicators to change color depending on their pH level.
Why does a chemical reaction which have occurred between acids and bases change color?
The change in color in this type of chemical reaction is due to the formation of a new substance with different chemical properties. This new substance may absorb and reflect light differently, leading to a change in color. This phenomenon is often used in indicators to visually show the endpoint of an acid-base reaction.
Do acids turn indicator pink?
No, acids turn indicators red. Acids donate protons in solution, resulting in a color change in indicators from their normal color to red.
What chemical an you use to test acids and alkali's?
These substances are called pH indicators.
When acids are added to rocks containing a carbonate bubbles form is this evidence of a physical change or chemical change?
This is evidence of a chemical change. When acids react with carbonate minerals in rocks, they create gas (CO2), which leads to the formation of bubbles. This reaction results in the formation of new substances, indicating a chemical change.
How is toasting bread chemical or physical change?
Toasting bread is a chemical change because the heat causes a chemical reaction in the bread, leading to the browning and change in flavor. This involves the Maillard reaction, where the sugars and amino acids in the bread react to form new compounds.
Do acids have any effect on indicators?
Yes, acids can affect indicators by changing their color. Indicators are substances that change color in response to changes in pH levels, and an acid can cause this color change by altering the pH of the solution the indicator is in.
Is reaction with acid a physical or chemical property?
A physical reaction is when no new substances are formed, there is a change of state eg ice melting to a liquid. A chemical change is when the reaction forms a new substance. eg gas bubbles. An acid reaction can be both. You need to look at the reaction taking place, look for change of state (physical) or any colour change or gas bubbles (chemical).
How do indicators distinguish acids and bases?
Indicators are substances that change color depending on the pH of a solution. They do this by undergoing a reversible chemical reaction that is sensitive to the concentration of hydrogen ions (H+) in the solution. In acidic solutions, indicators change color to reflect the acidic pH, whereas in basic solutions, indicators change color to reflect the basic pH.
How is frying an egg became chemical change?
When the egg is in its liquid form and then heated, a chemical reaction between the protein and amino acids cause it to harden therefore making your "Became chemical change"
