dissolving salt in water. the salt dissapears but if you evaporate the water,
salt will be remained.
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Answer #2:
The answer is that a substance never "disappears". It may become imperceptible
to your senses, or it may move to another place outside of the region that you
are monitoring, but no substance in any realm that you can observe ever passes
into "nothingness".
The semi-exception is the situation in which mass becomes energy, but even
then, although some mass has apparently "disappeared", some energy has
apparently "appeared" ex nihilo, and if you understand the mass/energy
equivalence, then you understand that even there, nothing has appeared
or disappeared.
A physical change is a change in the form, state, or properties of a substance without changing its chemical composition. Even if a substance disappears, it can still be classified as a physical change if it has not undergone a chemical reaction and the molecules remain the same. Examples include melting, freezing, dissolving, or sublimation.
No it is not a physical change it is a physical property.
it depends on what is being dissolved
A physical change that does not produce a new substance is called a reversible change. This means the change can be undone by reversing the process, such as melting or freezing.
A change that alters the form of a substance without changing it into another substance is called a physical change. This type of change does not involve a change in the chemical composition of the substance, only its physical appearance. Examples include changes in state (solid to liquid) or changes in shape (cutting or crushing).
This is called a change in the physical state of the substance. For example formation of ice from water is a change in the physical state of water.
physical change
During a physical change, the matter of what the substance is made out of doesn't change.
A physical change does not change the substance.
It's called a physical change.
A physical change that does not produce a new substance is called a reversible change. This means the change can be undone by reversing the process, such as melting or freezing.
A change that alters the form of a substance without changing it into another substance is called a physical change. This type of change does not involve a change in the chemical composition of the substance, only its physical appearance. Examples include changes in state (solid to liquid) or changes in shape (cutting or crushing).
Physical change
It's called a physical change.
This is called a change in the physical state of the substance. For example formation of ice from water is a change in the physical state of water.
a physical change is a change in any physical property of a substance, not in the substance itself
a physical change is a change in any physical property of a substance, not in the substance itself
a physical change.
When a substance changes but still retains its original properties, the change is called a physical change. If it didn't retain its original properties, then it went through a chemical change.
physical change