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A change of state is accompanied by a change in an energy level, so it can be caused when energy is put into a substance, or taken out. As an example, when changing state from liquid to gas, that means that the individual particles have so much energy (or equivalently, move so fast) that they can escape from the attractive forces of other particles.
Ashlee Farrell
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What kind of change happens when the composition of a substance does not change?
Physical changes, such as the change from ice to water to steam; the compound remains as H2O in all three states.
Does a change in state mean that a new substance has formed?
In a "physical change" a new substance is not created. In a "chemical change" a new substance is created. This applies to changes in states of matter. For example, ice, water, and steam are all the same substance, even though they exist in three different states. The elements of which they are comprised do not change. Sometimes you may be able to precipitate elements out of a substance through a phase change. In a mixture of alcohol and water you can fairly quickly boil out the alcohol.
A chemical change is a change in the of a substance....?
A chemical change is a change of the identity of a substance. Or A chemical change is a change of the substances into a new substance.
When a substance change into a different substance a change has occurred?
Chemical Change.
A chemical change is a change in the what of a substance?
burning the substance.
When the particles of a substance move faster they spread out causing the substance to what?
Change states
When the particles of a substance move about faster they spread out causing the substance to what?
Change states
What kind of change happens when the composition of a substance does not change?
Physical changes, such as the change from ice to water to steam; the compound remains as H2O in all three states.
Are the atoms in a substance the same if the substance changes states?
On heating there will be a change in the physical state not chemical composition. So the number of atoms will be the same even after change in state.
Does a change in state mean that a new substance has formed?
In a "physical change" a new substance is not created. In a "chemical change" a new substance is created. This applies to changes in states of matter. For example, ice, water, and steam are all the same substance, even though they exist in three different states. The elements of which they are comprised do not change. Sometimes you may be able to precipitate elements out of a substance through a phase change. In a mixture of alcohol and water you can fairly quickly boil out the alcohol.
What change is melting consider because energy is gained by the substance as it changes states?
Melting is a phase change in which a substance changes from the solid state to the liquid state. Changing phases is also a physical change.
How heat energy can change the states of matter?
When heating a substance the substance's molecules gain kinetic energy, this leads to chemical bonds being broken and thus a change of state.
The conversion of a substance from one of the three physical states of matter to another is?
phase change
What happens when a substance change states?
When a substance changes state, Energy within the substance is gained or lost, but the composition is unchanged.
A chemical change is a change in the of a substance....?
A chemical change is a change of the identity of a substance. Or A chemical change is a change of the substances into a new substance.
Can a physical change change what a substance is?
a physical change will only alter the appearance but will NOT change the substance to another substance =)
When a substance change into a different substance a change has occurred?
Chemical Change.
