0
A physical change in matter occurs when the shape or form of matter changes, but there is no chemical reaction. If someone were to melt a sugar cube, that would be an example of a physical change.
That would be called an irreversible reaction. An example would be burning logs in a fire place. You can't reverse it to get the logs again.
Add your answer:
Earn +20 pts
Give an example of any change with cannot be reversed?
Burning of fossil fuels leading to irreversible climate change is an example of a change that cannot be reversed due to the long-lasting impact on the Earth's ecosystem.
Give one example of physical change that could be easily reversed?
Melting an ice cube is a physical change that can be easily reversed by allowing the water to freeze back into ice.
Is melting ice a chemical or physical change explain?
It is a physical change because when you have a chemical change it changes the properties and makes it into a new thing, and it can't be reversed. Physical changes are usually just changes of states (solid, liquid, gas) and a physical change can be reversed.
What kind of change is it if changing from one state of matter to another?
It is a physical change. The molecules within the substance remain the same, but their arrangement and movement change as they shift from one state of matter to another (e.g., from solid to liquid or gas).
Is a given change a chemical or a physical change?
It depends. Physical can be easily reversed. Chemical is hard, if not impossible to reverse.
What is physical change in matter?
A physical change is a change to a substance/object which can be easily reversed, and no new substance is formed from it (as opposed to chemical change). The state of matter is usually changed, for example, turning from a solid to a liquid. e.g. ice cube melting
What are example of a physical change that can be reversed and an example of a physical change that cannot be reversed?
An example of a physical change that can be reversed is melting ice into water; this can be reversed by freezing the water back into ice. An example of a physical change that cannot be reversed is breaking a glass; once the glass is shattered, it cannot be returned to its original form.
What is an irreversible change to matter?
An irreversible change to matter is a change that cannot be reversed by physical means, such as heating, cooling, or mixing. This type of change often involves a chemical reaction that forms new substances with different properties than the original materials. Once an irreversible change occurs, it is typically not possible to revert the matter back to its original state.
Burning is what form of change?
it is a chemical change because it cannot be reversed
Is an egg a chemical change?
Yes, it is, because it cannot be reversed.
Is rusting a phsyical change?
Rusting is a chemical change because under it iron goes under oxidation and oxidation is a chemical process. Also, a physical change can be reversed but a chemical change cannot and rusting cannot be reversed. Hence also rusting is a chemical change.
Did reversing the direction of the electricity in the wire change the way compasses were affected?
Yes. If a current is reversed, the magnetic field is reversed as well.
What would happen to the moth populations if the pollution created by the industrial revolution were to be reversed?
the population of the moth would have change if its reversed by having
What would happen to the moth populations if the pollution created by the industrial revolution were to be reversed.?
the population of the moth would have change if its reversed by having
Why is a firework an example of a chemical change in a fourth grade answer?
A chemical change can not be reversed. Obviously the fire work can not be put back together because it has reacted, not being able to be reversed, and therefore, being classified as a chemical change.
Evaporation a physical change?
Yes, because it can be reversed by condensation. Physical change = Reversible Chemical change = Irreversible
When an egg is cooked is this a physical change?
Cooking an egg is a chemical change because it cannot be reversed.
