what might be some clues that would help us know whether or not the change is chemical? PLEASE help me i am confused.
i need 5 clues
I NEED HELP DUE TOMORROW
Check this site.
http://www.ric.edu/faculty/ptiskus/chemical/
i don't understand.i need 5 clues that helps me to know whether or not the change is chemical
Determining whether a change is chemical or not requires careful observation and analysis. Here are some clues that can help you differentiate between a chemical change and a physical change:
1. Formation of a new substance: Chemical changes involve the creation of a new substance with different properties than the original substances. Look for any signs of a new product being formed, such as a color change, formation of gas bubbles, or the creation of a precipitate (a solid that separates from a liquid).
2. Irreversibility: Chemical changes are often irreversible, meaning it is difficult or impossible to get back to the original substances. If the change is permanent and cannot be undone by physical means, it may be chemical. For example, burning a piece of paper results in the formation of ash which cannot be turned back into paper.
3. Energy changes: Chemical changes often involve the absorption or release of energy. Observe if there is a significant temperature change, production of light or heat, or if the reaction is exothermic (releases energy) or endothermic (absorbs energy).
4. Reaction rate: In some cases, chemical changes can be indicated by a noticeable reaction rate. If the change occurs rapidly or with the addition of a catalyst, it suggests a chemical change is taking place.
5. Changes in properties: Chemical changes often result in a transformation of properties, such as odor, taste, or texture. Pay attention to any noticeable changes in these characteristics.
To determine if a change is chemical or not, it is important to consider these clues collectively rather than relying on a single clue. Observation, careful note-taking, and knowledge of chemical reactions and properties of substances involved will help you reach a more accurate conclusion.