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no they don't
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∙ 9y ago
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Are all physical changes are reversible changes?
yes , all the physical changes are reversible changes.
Is enzyme in saliva a physical or chemical change?
i know that its physical change because all you saliva is doing is making the food wet
All the activities to show that physical changes are usually reversible?
physical changes are sometimes reversible
Are all physical changes reversible with examples?
Not all physical changes are reversible because most times when such changes occur parts of the substance is lost to the environment.
Is the boiling of water until it becomes water vapor is a physical or chemical change?
It's a physical change. All changes of state (solid to liquid, or liquid to gas, for example) are physical changes.
Do all changes involve interaction?
Yes
Which property of a substance does not change when the amount of the substance changes?
All substances have distinct physical and chemical properties, and may undergo physical or chemical changes. Physical properties, such as hardness and boiling point, and physical changes, such as melting or freezing, do not involve a change in the composition of matter.
Are all physical changes are reversible changes?
yes , all the physical changes are reversible changes.
Are all physical changes accompanied by chemical changes?
Not all chemical changes are accompanied by a visible physical change. Most chemical changes however will be accompanied by a physical change.
Is enzyme in saliva a physical or chemical change?
i know that its physical change because all you saliva is doing is making the food wet
Is energy involved in all changes?
yes all changes involve exchange in energy
How are all physical changes alike?
all physical changes are alike in which all of them changing without changing in chemical makeup of the matter we have
How are physical changes alike?
all physical changes are alike in which all of them changing without changing in chemical makeup of the matter we have
All the activities to show that physical changes are usually reversible?
physical changes are sometimes reversible
Which of the phase changes does not involve changing a liquid into a gas?
All the rest of them.
What undergoes physical change?
All substances have physical changes.
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.
