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Is the principle that the amount of a physical substance remains the same even if its physical appearance changes?
Wiki User
∙ 10y ago
The principle behind the statement is the law of conservation of energy, which states that;
"Energy can neither be created nor be destroyed. It can only be transformed from one form to the other."
Hence, irrespective of being a physical or a chemical change, total amount of energy in the initial stage is always equal to the total amount of energy after the change.
Wiki User
∙ 16y ago
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What type of changes occur when water changes from liquid to solid?
It is a physical change because only its appearance changes. It is still water and not a different substance.
What can indicate a physical or chemical change?
physical=A physical change does not produce a new substance. chemical= A chemical change produces a new substance. u now have the answer........
Is changing color of apple a chemical or physical change?
An apple turning brown is a CHEMICAL change.
What happens to substances or materials that undergo physical and chemical changes?
That depends on which change.Physical changes may result in a change in appearance, but never a change in composition. Ripping, folding, melting, boiling, dissolving, and crumpling are examples of physical changes. After all of these, the substance is still made of the same atoms/elements.A chemical change will change both the appearance and composition of the matter. Examples of this are burning and reacting with acid. After the change, the substance both looks different and has a different makeup.
Which is not a physical change associated with aging?
a physical change is not a chemical change as it changes the physical appearance of the substance like state, color, size and shape
In a physical change a substance changes its but not its identity.?
Appearance
How can you recognize physical and chemical changes?
A physical change is when a new substance is formed. It changes the appearance. A chemical change affects the composition.
What type of changes occur when water changes from liquid to solid?
It is a physical change because only its appearance changes. It is still water and not a different substance.
Is an apple turning brown physical change?
It is both physical and chemical change as it changes its appearance , and it results in a new substance also
Physical changes in a substance results in?
Physical changes in a substance result in
When the physical form of substance changes without changing its composition?
This process is known as a physical change. It involves a change in the state or appearance of a substance but does not result in the formation of a new substance. Examples of physical changes include melting ice, boiling water, and breaking a glass bottle. The chemical composition of the substance remains the same throughout the physical change.
Can physical change be measured?
Yes. Physical changes only cause a substance to change in the appearance. You could measure if it grew in size, if it changed color, the amount of components the substance now contains after the physical change
What is physical and changes in matter?
a physical is a change to a substance
What is the effect of physical changes?
Physical changes do not change the properties of the substance. You can get back the original state of the substance in most cases by reversing the physical process.
What can indicate a physical or chemical change?
physical=A physical change does not produce a new substance. chemical= A chemical change produces a new substance. u now have the answer........
What kind of changes in substance are always physical changes?
each substance has a density that differ from the densities of other substance.
When a physical changes occurs a substance's changes?
A new substance is formed only after a chemical change.
