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When something freezes does it change composition?
When a substance freezes, its physical state changes from liquid to solid, but its chemical composition remains the same. For example, water freezes into ice, and both have the same molecular structure (H2O). However, the arrangement of molecules changes, affecting properties like density and rigidity. Thus, while the form changes, the underlying chemical identity does not.
When a substance undergoes a physical change its identity remains the?
When a substance undergoes a physical change, its identity remains the same, meaning its chemical composition does not alter. Examples of physical changes include melting, freezing, and dissolving, where the substance can typically return to its original state. The properties such as color, shape, and state may change, but the fundamental structure of the molecules remains intact.
Is it a physical or chemical change when a substance changes form but it remains the same substance?
it would be physical change because physical change is when the substance stays the same
What happens to a temperature of a substance while a changing of state occurs?
As a substance changes state, the temperature remains constant.
Do chemical changes affect the chemical structure of a substance?
Yes, chemical changes result in a change in the chemical structure of a substance. During a chemical change, new substances with different chemical compositions are formed through the rearrangement of atoms and bonds. This is in contrast to physical changes, where the chemical structure remains the same even though the physical properties may change.
When something freezes does it change composition?
When a substance freezes, its physical state changes from liquid to solid, but its chemical composition remains the same. For example, water freezes into ice, and both have the same molecular structure (H2O). However, the arrangement of molecules changes, affecting properties like density and rigidity. Thus, while the form changes, the underlying chemical identity does not.
When a substance undergoes a physical change its identity remains the?
When a substance undergoes a physical change, its identity remains the same, meaning its chemical composition does not alter. Examples of physical changes include melting, freezing, and dissolving, where the substance can typically return to its original state. The properties such as color, shape, and state may change, but the fundamental structure of the molecules remains intact.
Is it a physical or chemical change when a substance changes form but it remains the same substance?
it would be physical change because physical change is when the substance stays the same
What happens to a temperature of a substance while a changing of state occurs?
As a substance changes state, the temperature remains constant.
Do chemical changes affect the chemical structure of a substance?
Yes, chemical changes result in a change in the chemical structure of a substance. During a chemical change, new substances with different chemical compositions are formed through the rearrangement of atoms and bonds. This is in contrast to physical changes, where the chemical structure remains the same even though the physical properties may change.
Is copper sulphate a physical change?
Copper sulfate dissolving in water is a physical change because the chemical composition of copper sulfate remains the same. Physical changes do not alter the chemical structure of a substance.
When a substance changes form but it remains the same substance is it a chemical or physical change?
it would be physical change because physical change is when the substance stays the same
When a substance changes form but it remains the same substance is it a physical or chemical change?
it would be physical change because physical change is when the substance stays the same
How is the density of a pure substance affected if the mass and or volume are changed?
The density of a pure substance remains constant regardless of changes in mass or volume. Density is a physical property that is inherent to a substance and is calculated as mass divided by volume. As long as the substance remains the same, the density will not change.
Why are changes in state also classified as physical change?
Changes in state, such as melting, freezing, boiling, and condensation, are classified as physical changes because they involve a transformation in the form of a substance without altering its chemical composition. During these processes, the molecular structure remains the same, even though the arrangement and energy of the molecules change. As a result, the substance retains its chemical identity, making these changes purely physical in nature.
What During a phase change the temperature of a substance .?
The temperature* remains unchanged. * The heat (energy) content changes.
Is liquid to gas chemical change?
No, the change from liquid to gas is a physical change, not a chemical change. In this process, the substance's molecular structure remains the same, only its physical state changes from liquid to gas.
