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When a piece of paper is torn into two pieces has it undergone a chemical change or physical change?
It encountered a physical change.
When a piece of paper is torn into two pieces has it undergone a chemical change or a physical change?
ANSWER:Its a physical change. If you burned it and it became ash, its a chemical change. Physical change means it made no change on a molecular level. Its still paper, just in two separate pieces.It is a physical change, as the chemical property of the paper remains unchanged.
How is a precipitate evidence for a chemical reaction?
A precipitate forms when two aqueous solutions react to produce an insoluble solid. The formation of a precipitate indicates that a chemical reaction has occurred, as the reactants have undergone a change in chemical composition to produce a new substance with different physical properties. This is observable evidence of a chemical change taking place.
What is produced when rubbed the two objects?
chemical energy
What are two kinds of chemical change?
chemical and physical
How do the substances that form in a chemical reaction differ from the substances that react?
The substances that form in a chemical reaction are the products, while the substances that react are the reactants. Products have different chemical properties than reactants because they have undergone a chemical change during the reaction.
Is a change a physical or chemical change?
There are two kinds of changes - physical and chemical. It depends on how the change is made.
Is Molding food a chemical or physical change and why?
its a physical joking its a chemical change a physical is one substances, and a chemical change is two or more substances so the answer is to food molding a chemical change
Is naoh plus hcl results in nacl plus h2o a chemical change?
Yes, species have traded partners and the chemical compositions have changed. A strong acid and a strong base have undergone a neutralization reaction and produced a salt( actually two species in solution ) and water.
What are two effects caused by a chemical change?
Two effects that are caused by a chemical change are changes from one substance into another. Another effect that can be caused by a chemical change is a change in the temperature of the surrounding system and substance, or a change in color of the substance.
What An interaction of two or more molecules to create a chemical change?
chemical
How do you determine a chemical change has occurred when two substances are combined?
A chemical change can be determined when two substances are combined by observing if there is a color change, formation of a precipitate, evolution of gas, or change in temperature. Additionally, if the chemical properties of the substances change, such as their reactivity or toxicity, it indicates a chemical reaction has taken place.
