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What happens to the molecular level when substances get hot?
When substances get hot, the molecules gain energy and vibrate more rapidly. This increase in molecular motion causes the substance to expand, changing its physical state (e.g. from solid to liquid or from liquid to gas) if the heating continues. Heating can also break the bonds between molecules, leading to chemical reactions and changes in the substance's properties.
What kind of change such as a change of state the substance of the whole changes but its underlying structure remains the same?
In changes in which the molecular structure of a substance remains constant, such as changes of state, we often refer to these changes as Physical Changes. If the molecular structure is altered it would be a Chemical Change.
Do all substances behave like water when they change from the solid state to the liquid state?
No, not all substances behave like water when they change from the solid state to the liquid state. The behavior of a substance during phase changes depends on its molecular structure and the forces between its molecules. Water is unique in that it expands when it freezes, whereas most substances contract when they solidify.
Are the changes in the state of matter chemical changes?
No, changes in state of matter (such as melting, freezing, boiling) are physical changes, not chemical changes. Chemical changes involve the formation of new substances with different chemical properties.
What kind of changes in substances are always physical changes?
The kinds of changes in substances that are always physical changes are changes in the state. This is the change from solid, to liquid and then to gas and the reverse.
What happens when matter is changed physically?
It means that although it changes, no new substances are formed. Examples of such changes are melting and other state changes, and dissolving.
What happens to the molecular level when substances get hot?
When substances get hot, the molecules gain energy and vibrate more rapidly. This increase in molecular motion causes the substance to expand, changing its physical state (e.g. from solid to liquid or from liquid to gas) if the heating continues. Heating can also break the bonds between molecules, leading to chemical reactions and changes in the substance's properties.
What happens to substances when they are heated?
When substances are heated, their molecules gain energy and move more rapidly. This increase in molecular motion can cause substances to change state (e.g. from solid to liquid), react with other substances, or decompose into simpler chemical components. Ultimately, heating a substance can lead to a variety of physical and chemical changes depending on the specific properties of the substance.
How substances changes from one state to the other state?
through changes of energy
How are the state changes of water similar to the state changes in most other substances?
These changes of state are: solid to liquid, liquid to gas, gas to liquid, liquid to solid, solid to gas, gas to solid. The majority of substances have these state of matter changes.
How are the state changes of similar to the states changes in most other substances?
These changes of state are: solid to liquid, liquid to gas, gas to liquid, liquid to solid, solid to gas, gas to solid. The majority of substances have these state of matter changes.
What kinds of changes in substances are always physical change?
The kinds of changes in substances that are always physical changes are changes in the state. This is the change from solid, to liquid and then to gas and the reverse.
What kind of change such as a change of state the substance of the whole changes but its underlying structure remains the same?
In changes in which the molecular structure of a substance remains constant, such as changes of state, we often refer to these changes as Physical Changes. If the molecular structure is altered it would be a Chemical Change.
How does matter physically change when it changes its phase or state?
Its motion changes speed on the molecular level
What happens to water as it changes state?
The density changes.
Can an object undergo both physical and chemical changes?
Yes, an object can undergo both physical and chemical changes. Physical changes involve changes in physical properties like shape, size, or state of matter without altering the composition. Chemical changes involve a transformation at the molecular level, resulting in the formation of new substances.
How are the states changes of water similar to the state changes in most other substances?
These changes of state are: solid to liquid, liquid to gas, gas to liquid, liquid to solid, solid to gas, gas to solid. The majority of substances have these state of matter changes.
