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What do we call substance which changes readily into vapour without heating?
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What happens when substances goes through a phase change?
Melting: the substance changes back from the solid to the liquid. Condensation: the substance changes from a gas to a liquid. Vaporization: the substance changes from a liquid to a gas. Sublimation: the substance changes directly from a solid to a gas without going through the liquid phase.
Which substance neutralize acid without leaving an alkaline solution?
Ammonia may neutralized aqueous acids and after heating the solution is no more basic or alkaline.
What is a change that alters a substance without changing it into another substance?
Many physical changes will not alter the identity. However, some physical changes, such as heating or cooling will result in phase changes and so the identity will be different. While ice and water are chemically the same, they are not identical forms of the substance.
Is making roasted marshmallows chemical change?
yes! chemical changes are changing the substance without actually changing the final object.
How long from the from the start of the experiment was the substance heated before all of the substance turned into a liquid?
It is impossible to tell how long from the start of the experiment it was before all of the substance turned into a liquid without more information about the experiment. Perform the experiment again and use a timer to determine the length of time required to turn the substance into a liquid through heating.
How can temperature be increased without heating?
It is possible to add heat to a substance without changing its temperature. That happens during melting and boiling. However, I cannot think of a case in which the temperature of a substance increases without heat being added to it, either by radiation, conduction or convection.
What happens when substances goes through a phase change?
Melting: the substance changes back from the solid to the liquid. Condensation: the substance changes from a gas to a liquid. Vaporization: the substance changes from a liquid to a gas. Sublimation: the substance changes directly from a solid to a gas without going through the liquid phase.
How can you separate a substance without filtering boiling or heating?
Magnetism, dissolving, sifting (might count as filtering).
When a substance changes from a solid to a gas without becoming a liquid what has it done?
sublimed.
What happens when a substance changes from a solid to a gas without becoming a liquid?
It sublimes
How a physical property such as mass or texture can change without causing a change in substance?
These physical changes doesn't influence the chemical formula of the substance.
The substance which changes from solid to vapour state at normal atmospheric pressure without being liquified is?
One substance that does that is carbon dioxide.
The phase change in which a substance changes from a solid to a gas or vapor without changing to a liquid first is?
sublimation
Which heat changes the state of a substance without changing its temperature?
both the heat of fusion and the heat of vaporization
What do you call a substance that changes from a gas to a solid?
Sublimation is the unique property in which a substance can go from a solid to a gas without becoming a liquid. Sublimation is a phase transition.
Which substance neutralize acid without leaving an alkaline solution?
Ammonia may neutralized aqueous acids and after heating the solution is no more basic or alkaline.
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.
