All of the following are indicators of a chemical change except:
heat production
color change
phase change **
bubbling or fizzing
A lot of people are saying color change, however in my lesson it says a chemical change has indicators like:
Color change
Bubbling or fizzing
Light or heat production
Production of gases or solids
Odor production
I think you're right and "a lot of others" are wrong.
Thank you!
color changes are due to molecules rearranging themselves (chemical change) to absorb and reradiate different wavelengths....
To determine which of the given options is not an indicator of a chemical change, let's go through each one:
1. Heat production: When a chemical change occurs, it often involves the release or absorption of heat. Therefore, heat production is indeed an indicator of a chemical change.
2. Color change: A change in color is a common indicator of a chemical change. Substances may change color as their molecular structure is altered during a reaction.
3. Phase change: In chemistry, a phase change refers to a physical change rather than a chemical change. It involves a conversion between the different states of matter, such as solid to liquid or liquid to gas. Since the question asks for an indicator of a chemical change, phase change can be considered the correct answer.
4. Bubbling or fizzing: The production of gas bubbles or fizzing is commonly observed in chemical reactions. It is a result of the release of gases, indicating a chemical change.
Therefore, the correct answer is "phase change," as it does not specifically indicate a chemical change, unlike the other options.