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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
Mark Greenholt
Wiki User
∙ 14y agoin chemical change the chemical properties of an object are changed. for example a paper is burned. both the chemical and physical properties of the paper are change. the paper itself changed into carbon. that is a chemical change. if for example the paper is cut into small pieces that is called physical change because the paper is still a paper but the physical properties of the paper are changed since it became smaller when you cut it.
Wiki User
∙ 9y agoThe chemical composition of the product changes during a chemical reaction. These substances are completely transformed during all chemical reactions.
Wiki User
∙ 11y agoThere are many such codes available, one such is eastsiderun which you can use to get a discount on your shoes when entered as the promotional code on their website when you purchase.
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∙ 11y agostuff
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Is seeds to pumpkin physical or chemical change?
This process involve chemical reactions but also physical changes.
Do chemical changes affect the chemical structure of a substance?
yes chemical properties do change a substance physical properties just change the physical shape or look!!!
What type of change when a substance changes into a new substance?
chemical
Is frying a chicken physical or chemical change?
Physical changes can be undone. It is not possible to unfry a chicken. The heat casues chemical changes in the meat and in any coating.
What is a non example of chemical changes?
non example of chemical change: one non example is ice. ice is NOT an example of chemical change.
Is chemical energy related to chemical change?
Yes it is released/ absorbed during chemical changes.
What are the differences betwen physical and chemical changes in terms of what happenes to molecules?
During a chemical change the molecule is transformed; during a physical change the molecule is not transformed.
Is seeds to pumpkin physical or chemical change?
This process involve chemical reactions but also physical changes.
When a substance changes into a diffrent substance what change has occurred?
chemical change
Is firing pottery a chemical change?
Yes. Chemical changes occur during the calcination of ceramics for pottery.
What is a characteristic that best describes what happens during a physical change?
There are no chemical changes.
Is fashioning a table leg from a piece of wood chemical or physical changes?
Physical. Physical changes include things such as changing shape or color. Chemical changes change the chemical properties of a material, often during a chemical reaction.
Do chemical changes affect the chemical structure of a substance?
yes chemical properties do change a substance physical properties just change the physical shape or look!!!
Is heating ammonium dichromate a chemical or physical change?
It is a chemical change because the ammonium dichromate changes color, explodes, and probably creates a gas during the change.
Can a substance produced during a physical change easily change back?
Yes. Chemical changes are irreversible, but physical changes can easily be changed back
Is mixing cement a chemical or physical change?
Actually both physical and chemical changes are happening during cement mixing.
Are all physical changes accompanied by a chemical change?
A physical change is a change in chemical composition. A physical change is a change where chemical composition is not altered. Not all chemical changes are accompanied by a physical change, but some are. The same is true for the reverse.
