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Why does the change in the color of material indicate that a chemical reaction occurred?
A change in color can indicate a chemical reaction has occurred because the reaction might be producing or consuming a colored compound. This means that the chemical composition of the material has changed, leading to a different color being observed. The new color can be a result of the formation of new substances with different properties than the initial materials.
Which is not proof that a chemical change has occurred?
Change in color is not proof that a chemical change has occurred. A change in color can sometimes be the result of a physical change without any new substances being formed.
What are the four occurrences indicate a chemical reaction has occurred?
A chemical reaction can result in any or all of the following: - a change in temperature (up or down) - a change in color - a smell that wasn't there before - the formation of bubbles (indicating the production of a gas) - the formation of a precipitate
How can you be certain that a chemical change has occurred?
Signs of chemical reactions may be: - Gas release - Formation of a precipitate - Change of color - Change of odor - Change of pH - Change of aspect - Change of viscosity - Change of the temperature - Visible formation of new compounds
Why is color change considered a chemical change?
Color change is considered a chemical change because it involves a transformation at the molecular level, where the chemical composition of the substance is altered, leading to a change in its color. This change is irreversible and indicates a chemical reaction has occurred.
Why does the change in the color of material indicate that a chemical reaction occurred?
A change in color can indicate a chemical reaction has occurred because the reaction might be producing or consuming a colored compound. This means that the chemical composition of the material has changed, leading to a different color being observed. The new color can be a result of the formation of new substances with different properties than the initial materials.
Which is not proof that a chemical change has occurred?
Change in color is not proof that a chemical change has occurred. A change in color can sometimes be the result of a physical change without any new substances being formed.
What are the four occurrences indicate a chemical reaction has occurred?
A chemical reaction can result in any or all of the following: - a change in temperature (up or down) - a change in color - a smell that wasn't there before - the formation of bubbles (indicating the production of a gas) - the formation of a precipitate
Why does this indicate that a chemical reaction might have occurred?
Some indicators of a chemical reaction are: - change of color - change of odor - release of a gas - change of the temperature - change of the viscosity - formation of a precipitate - change of general appearance - possible explosion - possible chemiluminiscence
What substance in found in a plant to show that photosynthesis has occurred?
Chlorophyll is the substance found in plants that indicates photosynthesis has occurred. It is responsible for the green color of plants and is essential for absorbing light energy to drive the photosynthetic process.
How can you be certain that a chemical change has occurred?
Signs of chemical reactions may be: - Gas release - Formation of a precipitate - Change of color - Change of odor - Change of pH - Change of aspect - Change of viscosity - Change of the temperature - Visible formation of new compounds
What are four things that indicate that a chemical change probably happened?
Production of gas: If there is a sudden release of gas, bubbling, or fizzing, it may indicate a chemical change. Formation of a precipitate: A solid substance forming in a solution can indicate a chemical change has occurred. Color change: A visible change in color of the substance can be a sign of a chemical reaction. Change in temperature: A noticeable temperature change, either an increase or decrease, can be an indicator of a chemical change taking place.
What are clues that a chemical reaction has taken place A Formation of a gas B Constant temperature C Steam D Change in color?
A) Formation of a gas: Bubbles or fizzing can indicate the release of a gas during a chemical reaction. C) Steam: The presence of steam may indicate that water is being formed as a product of the reaction. D) Change in color: A noticeable change in color of the substances involved can suggest a chemical reaction has occurred.
Does color changes indicate a chemical change?
Yes. If you mix substances and the mixture changes to a color that is not one of the colors of the things you mixed, then a chemical reaction has occurred. For example, mixing white starch with brownish iodine will immediately turn the starch a very dark blue color.
When leaves change color are they still performing photosynthesis?
While there are leaves that perform photosynthesis and are not green in color, when the leaves of any deciduous plant change color it is part of a process in which decreasing sunlight triggers a decrease in chlorophyll levels as the plant transitions into dormancy for the winter. As such the leaves perform steadily less and less photosynthesis as they change color, finally stopping entirely after they detach from the plant.
Is change in color a clue that can indicate a chemical change?
Yes. Research litmus paper.
What are some evidences that a chemical change occur?
Some evidence that a chemical change has occurred include the formation of a precipitate, a change in color or odor, the production of gas bubbles, or a change in temperature. These observable changes indicate that a new substance has been formed with different chemical properties from the original substances.
