Chemical.
Four good indicators of a chemical change are:
# Change in Color # Change in Temperature # Creation of a gas # Creation of a precipitate These don't always indicate a chemical change, but are good guidelines if you are unsure.
Physical there still the same mixture but blended together not a totally different substance.
The new solid formed after a chemical reaction is often called the precipitate but not necessarily.
To determine the presence of a precipitate in a chemical reaction, one can look for the formation of a solid substance that appears cloudy or settles at the bottom of the reaction mixture. This solid substance is called a precipitate and indicates that a chemical reaction has occurred.
You can determine if a chemical reaction is occurring by observing changes in the physical or chemical properties of the substances involved. Two methods to identify this process are observing the formation of a precipitate or a color change in the reaction mixture.
Formation of a precipitate is evidence of a chemical reaction.
Neither; it's a mixture of chemicals.
Physical there still the same mixture but blended together not a totally different substance.
Physical.
The new solid formed after a chemical reaction is often called the precipitate but not necessarily.
To determine the presence of a precipitate in a chemical reaction, one can look for the formation of a solid substance that appears cloudy or settles at the bottom of the reaction mixture. This solid substance is called a precipitate and indicates that a chemical reaction has occurred.
Ginseng is a mixture of chemicals - not a single chemical substance.
Chewing gum is not a chemical but a mixture of chemicals.
physical
You can determine if a chemical reaction is occurring by observing changes in the physical or chemical properties of the substances involved. Two methods to identify this process are observing the formation of a precipitate or a color change in the reaction mixture.
A chemical can be defined as a substance with well defined properties. There are a number of different types of chemicals. Every element is a chemical. Every compound is also a chemical. And even a mixture of elements and/or compounds is also a chemical (it might also be described as a mixture of chemicals).
physical change
A mixture.