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It depends on the physical change. The most obvious example would be evaporation, when a solid changes to a gas. In a gas, the particles have very high energy and are not bonded to each other. There is a large amount of space between them. On the other hand, in a liquid, the density is only slightly different to the density in a solid. All the particles are touching each other, although the bonds between particles are comparatively weak. Basically, as liquid is heated, the particles absorb more and more energy and this causes them to vibrate more and more vigorously. Essentially, once these vibrations overcome the weak bonds between the particles, they all spread apart, converting from a liquid to a gas. A liquid is more dense than a gas because they contain more particles per unit volume. That is, if you had a cubic centimetre of liquid and a cubic centimetre of gas, there would be far more particles in the liquid than in the gas, because there is less space between the particles. Other physical changes, such as when a liquid freezes into a solid, would not entail such a significant change in density. Also, there are sure to be a number of physical changes that don't entail any change in density at all. Again, it really depends on the physical change you're talking about.
What else can I help you with?
Can new compounds form during a physical change?
no because in a physical change it does not change the chemical make up, however, it does during a chemical change
Is it physical or chemical change when dough becomes bread?
The transformation of dough into bread involves both physical and chemical changes. The physical changes include the expansion of the dough during baking due to the release of gases, while the chemical changes involve the reactions between proteins and starches in the dough leading to the formation of a stable bread structure.
Is flotation a physical change or chemical change?
Floating is not a change of any kind. It is a physical property, dependent on its density.
Is making ice a chemical or physical change?
im think it is a physical change because there chemical bond are formed during ice makig.only a physical chage ocuur that the density of the water gets low and it becomes hard. regards Abdul karim
What does not change in solid matter?
Physical properties can be tested without changing the substance a new substance. Color, density, volume and melting and/or boiling point are examples of physical properties that can be observed and/or tested.
Is density a physical or chemical change or is it a physical and chemical change?
Your answer will be physical property.It can also be physical change when you're telling the density of an object. And the reason why is "density" is... physical is just those kind of stuff...
Which property of matter changes during a chemical change but does not changes during a physical change?
The composition of matter changes during a chemical change as new substances are formed with different chemical properties. In contrast, the composition of matter remains the same during a physical change, with only the physical state or appearance of the substance being altered.
Can new compounds form during a physical change?
no because in a physical change it does not change the chemical make up, however, it does during a chemical change
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.
How can you tell if a physical reaction is occuring?
During a physical change the chemical molecule is not affected; physical changes are changes of phase or form.
Is it physical or chemical change when dough becomes bread?
The transformation of dough into bread involves both physical and chemical changes. The physical changes include the expansion of the dough during baking due to the release of gases, while the chemical changes involve the reactions between proteins and starches in the dough leading to the formation of a stable bread structure.
Can a substance produced during a physical change easily change back?
Yes. Chemical changes are irreversible, but physical changes can easily be changed back
What are the differences betwen physical and chemical changes in terms of what happenes to molecules?
During a chemical change the molecule is transformed; during a physical change the molecule is not transformed.
Is flotation a physical change or chemical change?
Floating is not a change of any kind. It is a physical property, dependent on its density.
Is making ice a chemical or physical change?
im think it is a physical change because there chemical bond are formed during ice makig.only a physical chage ocuur that the density of the water gets low and it becomes hard. regards Abdul karim
What does not change in solid matter?
Physical properties can be tested without changing the substance a new substance. Color, density, volume and melting and/or boiling point are examples of physical properties that can be observed and/or tested.
What happens to the characteristics of a substance during a physical change?
During a physical change, the characteristics of a substance such as size, shape, and phase may change, but its chemical composition remains the same. These changes are reversible and do not result in the formation of a new substance.
