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Is freezing water to make ice a reversible change or a chemical reaction and why?
This is a reversible change because water is still the same substance just in a frozen form. It is not a completely new substance with new properties and the same goes for melting ice to get water. Hope this helped!
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.
Why the melting point of a substance is a physical property but flammability is a chemical property?
When a substance melts, it changes state from solid to liquid. This does not alter the substance's chemical composition, so melting point is a physical property. Flammability means burning, and when a substance burns, it reacts with oxygen to produce a new substance that was not there before. This is therefore a chemical property.
Why is melting of ice a physical change?
The melting of ice is a physical change because the liquid water is still H2O just like the water ice. And the melted water has all the physical and chemical properties of water, just like the ice. No new products with different properties are produced.
Why is melting a physical property of the wax but flammability in a chemical property?
Melting doesn't change the composition of a compound (substance).Burning is a chemical reaction, an oxidation - new compounds are formed.
Melting of ice chemical or physical change?
Melting ice is a physical change, because there is no new substance formed. The only thing that changes is the state of matter.
What is the reason why melting of ice is a physical change?
It's a physical change because no new substance is produced. Liquid water and ice are the same substance with particles arranged differently.
Is freezing water to make ice a reversible change or a chemical reaction and why?
This is a reversible change because water is still the same substance just in a frozen form. It is not a completely new substance with new properties and the same goes for melting ice to get water. Hope this helped!
A change where no new substances are formed?
Physical change. Example: ice melting into water. They're both H2O, so chemically speaking, no new substance is formed.
Why will ice melt when the melting point is lowered?
when we lower the melting point of of ice for example from 00C TO -20C, as the temperature is 00C that is above the new melting point of ice so ice get melt
Is an ice cube physical change?
Yes ,it is physical change because anything that forms a new substance is called physical change Yes, BUT, a MELTING ice cube would be a chemical change.
Which of the following forms a new substance melting freezing evaporating burning?
Burning chemically alters a substance, creating different / new substances as a result. Melting, freezing, and evaporating are all different phases of the same substance.
Can you explain the difference between physical changes and chemical changes?
Physical changes is change in property. Ex) change from solid to liquid....ice to water. Chemical change changes to different substances. Ex) rotting of fruit.
Physical chantes such as ice melting are any new substances formed?
No.
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
Why is the melting point of a substance is a physical property but flammability is a chemical property?
In the state of matter you can use all five senses without having to change the substance (physical property). With chemical property you are altering the substance so you are able to observe it.
Is melting physical or chemical changes?
Physical change because no new substance is created.
