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What is called when a substance undergoes a change but its identity or composition not change?
a chemical change
What is the diffence between physical and chemical properties as well an physical and chemical changes?
Physical properties can be observed without changing the chemical composition of a substance. Chemical properties can only be observed by changing the chemical composition of the substance. In a physical change, the chemical composition of the substance does not change. In a chemical change, the chemical composition of the substance changes.
In a physical change some of the physical properties of the substance may be altered and the chemical composition?
In a physical change, the chemical composition of the substance remains the same, but some physical properties like shape, size, or state may change. This means that the substance can be reversed back to its original state without undergoing a chemical reaction.
What type of change when a substance changes into a new substance?
chemical
What does not change when a substance changes matter?
The chemical composition of the substance does not change when it changes its state of matter. The arrangement of atoms and molecules may vary, but the elements present in the substance remain the same.
Is it true that if a physical change that occurs when a substance changes composition by forming one or more new substances?
No, that statement is incorrect. A physical change does not involve changing the composition of a substance or forming new substances. It only alters the physical state or appearance of a substance without changing its chemical composition. When a substance changes composition and forms new substances, it is considered a chemical change.
What is called a change that does not make a substance into a new substance?
A change that does not make a substance into a new substance is called a physical change. In physical changes, the physical properties of the substance may change, such as shape, size, or state (solid, liquid, gas), but the chemical composition remains the same.
Is Melting does that changes as a physical or chemical?
It is a physical change because the chemical composition of the substance does not change.
What doesnt change during the composition of a substance?
The composition of a chemical compound is not changed during a physical change.
A chemical change is a change in the of a substance....?
A chemical change is a change in the composition or structure of a substance, resulting in the formation of new substances with different properties. This type of change is usually irreversible and involves the breaking and forming of chemical bonds.
Why cutting of tree is a chemical change?
it is a physical change because its chemical composition does not change and no new substance is formed
When a liquid is expanded by heat is that a chemical of physical change?
It is a physical change because the chemical composition of the substance does not change.
