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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.
Elinor McDermott
Ferne Streich
1. changes of state from solid to liquid to gas and back
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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 substances undergo physical change?
All substances have physical changes.
What undergoes physical change?
All substances have physical changes.
What Is the between physical changes and chemical change?
Physical changes is change in property. Ex) change from solid to liquid....ice to water. Chemical change changes to different substances. Ex) rotting of fruit.
What is always a characteristic of a chemical change but not always a characteristic of a physical change?
When a chemical change takes place, the chemical structure of particles involved changes (i.e. one or more new substances are formed). In a physical change, the physical state of the particles involved changes (e.g. a solid melts and becomes a liquid). The chemical structure of the particles does not change, and no new substance is formed.
Are phase changes physical or chemical in nature?
A phase change is a physical change. It is not a chemical change.
What does change of state operation?
Change of state is a property that involves the substances of chemical and physical changes
Is bread a chemical change?
Bread is not a change. It is a mixture of substances that can undergo physical and chemical changes.
What are facts about physical and chemical change?
Chemical changes take place on the molecular level
What changes of matter occur in respiration?
A change is said to be physical if no new substances are formed. Physical changes are temporary and can easily be reversed to give back the substances in their previous form. Freezing of water is an example of a physical change. A change is said to be chemical if new substances with different properties are formed. Chemical changes are permanent and cannot be reversed to give back the substances in their previous form. Burning of paper is an example of a chemical change.
Is glass a chemical or physical change?
Glass is not a change of any sort. It is a mixture of substances that can undergo both physical and chemical changes
Is etching glass with acid a chemical or physical change?
It is a physical change caused by chemicals. Chemical changes are phyiscal changes.
