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Why might it be better to separate substances by physical changes rather than chemical changes?
That may be a better way of doing it because separating them via physical changes is more controllable.
Chemical changing can induce a chemical reaction and change the properties of what it is you're trying to separate. Physically changing it has a lower chance of creating chemical reactions, thus you isolate more of what you're trying to get in a purer form.
There may be other considerations, such as the possibility that the substance cannot be separated chemically because it is sensitive and may become unstable (i.e. may explode or create poisonous vapours).
What else can I help you with?
What are two kind of changes in matter?
Two types of changes in matter are physical changes and chemical changes. Physical changes involve a change in appearance, such as a change in shape or state, without forming new substances. Chemical changes involve a rearrangement of atoms to form new substances with different chemical properties.
Does a chemical reaction change physical properties or chemical?
A chemical reaction changes the chemical properties of substances involved by forming new substances with different chemical compositions. This can result in changes in physical properties such as color, temperature, odor, and state of matter.
Is reacting a physical change or chemical change?
Reacting can involve both physical changes and chemical changes. Physical changes involve alterations in the physical state of a substance without changing its chemical composition, while chemical changes involve the formation of new substances with different chemical compositions.
Does physical change differ from a chemical in that waste products are formed through chemical changes?
Yes, physical changes involve a change in the appearance or form of a substance without forming new substances. Chemical changes, on the other hand, involve the formation of new substances through the rearrangement of atoms. Waste products may be formed in chemical changes as new substances are produced.
Can distillation separate dissolved substances through physical change?
, Yes it can! Hope that helps. I am not sure what else you are asking. Physical changes are changes affecting the form of a chemical substance, but do not change the chemical composition of that substance. Chemical changes occur when a substance combines with another to form a new substance, called synthesis or, alternatively, decomposes into two or more different substances. As in the case of distillation, all you are doing is simply filtering which involves no chemical changes, purely physical. Hope I Helped
Chemical changes can be reserved by physical change?
No, chemical changes cannot be reversed by physical changes. Chemical changes involve the formation of new substances with different properties, while physical changes only affect the state or appearance of a substance without changing its chemical composition. Once a chemical change occurs, it cannot be undone by a physical change.
What are facts about physical and chemical change?
Chemical changes take place on the molecular level
Is bread a chemical change?
Bread is not a change. It is a mixture of substances that can undergo physical and chemical changes.
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.
Is ability to react with other substances chemical or physical?
The ability for a substance to react with other substances is a chemical property, as it involves changes in the substance's chemical composition. Physical properties, on the other hand, relate to characteristics such as color, shape, and state of matter, which do not involve changes in chemical composition.
What methods do scientist use to determine if it is a physical or chemical change?
Scientists distinguish between physical and chemical changes by examining if the change affects the chemical composition of the substances involved. Physical changes alter the appearance or state of a substance without changing its chemical makeup, while chemical changes result in the formation of new substances with different chemical properties through chemical reactions. Techniques such as observing color changes, production of gas, formation of a precipitate, or changes in temperature can help scientists identify whether a physical or chemical change has occurred.
What are the differences between physical and chemical changes?
Physical changes involve a change in appearance or state of matter without altering the chemical composition, while chemical changes result in the formation of new substances with different chemical properties.
