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Why iron sulfur are heated and form a non magnetic shiny grey substance is chemical change?
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Is decomposing a chemical or physical change?
Decomposition of any compound e.g. when heated CaCO3 compound decomposes to CaO and CO2 compounds, gives different substances and hence a chemical change. Y.Ozkalay
Reaction of copper and heat is physical change or chemical change?
If it is just heated, the reaction is physical. If there is burning in the process, than the state of the copper will change, making it a chemical reaction.
What change might be observed when a substance is heated?
How much it is heated. What has the heat done to the object ETC
Is mold a chemical change?
No. A material is heated, i.e. changes state, then hardens again. No chemical change, but at least a partial state change.
If water if heated and changed into steam is this a chemical or physical change?
It is what is called a phase change.
How can volume change if a substance undergoes a chemical change?
If a substance undergoes a chemical change, its properties change. For example, water, when heated turns into a gas which has a higher volume.
When a pure substance is heated or cooled but does not change state the energy as heat is the what?
chemical change
Is hot water an chemical or physical change?
That is a physical change because it has not had an explosive or bubbly substance.
What is a physical change rather than a chemical change?
`A physical change is one in which matter is changed into another physical state without changing its chemical constitution(eg-ice melts to water,in both case substance is H2O).A chemical change is where there is a chemical change of the substance during the process(eg-CaCO3 is heated to form CO2 and CaO,here the new substance formed is unrelated chemically to parent substance.)
When sugar is heated for a short time a thick colorless liquid substance is formed What kind of change takes place?
A chemical change takes place.
How does the volume and density of a substance change when it is heated?
The volume of a substance increases when heated, causing a decrease in density.
Does the volume of an object change if heated?
The volume of a substance increases when heated
Is water is heated and changed to steam a physical change or chemical change?
chemical
Is decomposing a chemical or physical change?
Decomposition of any compound e.g. when heated CaCO3 compound decomposes to CaO and CO2 compounds, gives different substances and hence a chemical change. Y.Ozkalay
When a substance changes state is it a physical or a chemical change?
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.
Is limestone gives off carbon dioxide when heated physical or chemical?
chemical. a new substance was produced
Does a chemical change always produce heat?
adding heat to a substance might produce a new gas, resulting in a chemical change for example when baking powder is heated it produces carbon dioxide gas which is needed to make a cake fluffy and light.
