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States
States
Changes of state occur when a substance is heated/cooled to the point where the bonds break/reform. These are physical reversible changes. During the change mass doesn't change.
Select the 3 states of matter from the options below.
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Which of the following are changes of state? Select all correct options from the list below.
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Which of the changes of states occurs when you heat an object? Select all correct options from the list below.
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Which of the changes of state occur when you cool an object? Select all the correct options from the list below.
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The changes of state occur when we heat or cool an object to the point where the bonds either break (in the case of heating) or reform (in the case of cooling).
Are changes of state physical or chemical changes?
Are changes of state reversible reactions?
If we melt ice, is the mass of the water produced the same or different to the original mass of the ice (assuming it is all converted)?
If we take a block of ice and heat it until it becomes steam, how will the mass of the steam compare to the mass of the original ice block (assuming we gather all the steam formed)?
Changes of states are physical changes as there is not a change in the elements which make up the substance. It is a reversible reaction (it can be undone). During the change mass doesn't change.