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What is changed when matter undergoes a phisical change?
When matter undergoes a physical change, its state may change (solid to liquid, liquid to gas, etc.), its shape or size may change, or its physical properties such as density or volume may be altered. However, the chemical composition of the substance remains the same before and after the physical change.
How do chemicals differ from physical changes?
When matter undergoes a chemical change, the composition of the matter changes. When matter undergoes a physical change, composition of the matter remains the same.
If matter undergoes a physical change has its physical properties changed?
yes it does
Is the density of iron a physical or chemical change?
Density is a physical property (not -'change'). It is a socalled intensive physical property of matter.
What is changed when matter undergoes a physichal change?
When matter undergoes a physical change, its physical properties change. Physical properties include density, color, solubility, conductivity, hardness, kinetic and potential energy of molecules, volume, pressure, temperature etc. One or more of physical properties change when matter undergoes a physical change. Remember chemical properties i.e. chemical composition and it's reaction with other substances remain the same. Also it's mass remains the same. When ice changes to water it's volume decreases, density increases, potential energy of molecules increases. Iodine is grey when solid but gives violet vapours on sublimation. Changing the pressure or volume or temperature of a gas results in change of one or both of the other quantities. These are examples of physical change.
When matter undergoes a chemical change does the composition of the matter change?
Yes, when matter undergoes a chemical change, the composition of the matter changes at the molecular level. New substances are formed with different chemical properties than the original substances.
Does a substance change density if it changes physically?
Depends on what you consider a physical change. Substances change their density when they change their state of matter. When the temperature rises, substances usually expand, wich leads to the density decreasing. When the temperature falls, substances contract, increasing the density. Exception would be water, as it shows an anomaly occurring near 273K
The expansion of matter upon heating is an example of what change?
The expansion of matter upon heating is an example of a physical change. This is because the substance undergoes a change in form or appearance without forming a new substance.
When matter undergoes a chemical change the composition of the matter what?
wow, did you copy this offf of a science worksheet? lol and it is "it changes" and when it goes under physical change "it remains the same"
What matter undergoes a chemical change the composition of the matter?
wow, did you copy this offf of a science worksheet? lol and it is "it changes" and when it goes under physical change "it remains the same"
When matter undergoes a physical change does it produce a different kind of matter?
well the reason they do that is to see that if there are a lot of those kind of animals or if there is more of them.
What is a physical change of matter?
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.
