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What else can I help you with?
Why are changes of state chemical changes?
They aren't; a change of state is a physical change
Is melting snow a physical change or chemical change?
Snow disappearing is a physical change. It is a combination of melting and then evaporating and of sublimation.
Why is dencity a physical change?
Density is classified as a physical property because the density of a substance can change when the substance changes state. Example: When water evaporates it is a physical change and the density changes. A chemical property is a property that describes its ability to react chemically with other substances and THEREFORE density is not a chemical property.
Is vaporize a physical change?
Yes. Liquid or solid changes to a gas physically.
Can matter change states after a physical change?
Yes, matter can change states after a physical change. Physical changes involve changes in the arrangement of particles without altering the chemical composition. For example, melting ice (solid to liquid) and boiling water (liquid to gas) are physical changes that involve changes in state.
Are state changes physical or chemical changes?
State changes are physical changes because they involve a change in the physical properties of a substance, such as its form or state of matter (solid, liquid, gas). No new substances are formed during a state change, making it a physical change rather than a chemical change.
Is melting point classified as a chemical property or a physical property?
physical. melting does not change the substance; it only changes the state of matter (or the movement of particles).
Why are changes of state chemical changes?
They aren't; a change of state is a physical change
A physical change occurs when matter changes state?
no physical change does not change matter
Is melting snow a physical change or chemical change?
Snow disappearing is a physical change. It is a combination of melting and then evaporating and of sublimation.
Why is dencity a physical change?
Density is classified as a physical property because the density of a substance can change when the substance changes state. Example: When water evaporates it is a physical change and the density changes. A chemical property is a property that describes its ability to react chemically with other substances and THEREFORE density is not a chemical property.
Why penny flattened by a hammer is a physical change?
It is a physical change, because it does not change in substance. A penny, whether in its normal state or flattened, is still a penny. Similarly, if you drop a watermelon and it breaks apart, that is also considered to be a physical change because it is still a watermelon. Things are considered to be chemical changes when the substance changes into something new, and is commonly classified as irreversible. When an object rusts, it is considered to be a chemical change. Chemical changes are associated with a temperature change, or a color change or bubbling or something of the sort. Physical changes deal with physical changes in state, for example, ice melting, or in the example you provided, a penny being flattened.
Is Boiling oil a physical change or a chemical change?
Physical ... it's only a state change. Cool it and it reverts to its old condition.
How does Matter Change Physical Changes?
It affects it state.
Does changes in a state of matter involve a physical change?
Yes, changes in state of matter involve physical changes because the substance retains its chemical composition. The change is simply a rearrangement of particles due to differences in energy levels or intermolecular forces, rather than a chemical reaction.
What kinds of changes in substances are always physical change?
The kinds of changes in substances that are always physical changes are changes in the state. This is the change from solid, to liquid and then to gas and the reverse.
Is changing from a gas to a liquid a chemical change?
No, changes of state such as this are physical changes.
