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When a substance changes state is it a physical or a chemical change?
Wiki User
∙ 8y ago
It undergoes a physical change... IE: ice and steam have the same chemical makeup (H20). To undergo a chemical change, the substance has to interact with something else. However, this can be a trick question because if something is heated in a real world setting then it could possible react with oxygen, nitrogen, carbon dioxide, or another trace gas in air.
Wiki User
∙ 15y ago
Wiki User
∙ 11y agoIt's always a physical change, but if heating the substance initiates a reaction it would also be a chemical change.
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Is evaparation a physical or chemical change?
Physical. If water evaporates, it is still water. It does not change into a different substance. A Chemical change is when something changes into a different substance. For example, when wood is burned, it changes into a different substance(ash).
When a substance changes into a different substance a blank change has occurred?
If form changes but identity doesn't change then it is a physical change.
How can you recognize physical and chemical changes?
A physical change is when a new substance is formed. It changes the appearance. A chemical change affects the composition.
Differences between physical and chemical changes?
A physical change is a change that does not change the chemical makeup of the substance. This can be crushing, tearing, or a phase change for example. A chemical change changes the chemical makeup of the substance. Some examples of this are rusting, combustion, or digestion.
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 are physical and chemical?
physical changes do not change the chemical properties of a substance
What is the diffeference between a physical and a chemical change?
A physical change is when a substance changes, but still keeps its identity. When a chemical change occurs, the substance changes its identity.
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.
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 does not change when a substance changes matter?
During a physical change, the matter of what the substance is made out of doesn't change.
Is evaparation a physical or chemical change?
Physical. If water evaporates, it is still water. It does not change into a different substance. A Chemical change is when something changes into a different substance. For example, when wood is burned, it changes into a different substance(ash).
When a substance changes into a different substance a blank change has occurred?
If form changes but identity doesn't change then it is a physical change.
How can you recognize physical and chemical changes?
A physical change is when a new substance is formed. It changes the appearance. A chemical change affects the composition.
Are there changes in the chemical changes of a substance when it undergoes a physical change?
nada
Differences between physical and chemical changes?
A physical change is a change that does not change the chemical makeup of the substance. This can be crushing, tearing, or a phase change for example. A chemical change changes the chemical makeup of the substance. Some examples of this are rusting, combustion, or digestion.
When a physical changes occurs a substance's changes?
A new substance is formed only after a chemical change.
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
