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That depends on what the substances are and how they are combined or mixed. Something like ethano and water can be separated by distillation, the process taking only a few minutes, but something like a mixture of uranium-235 hexafluoride and uranium-238 hexafluoride must be split by centrifuge, the process takinf weeks to separate a small amount. Other ways of separating a mixture include melting (if it is a solid) and using density properties; dissolution, decanting and evaporation (where one or more substances are soluble in the given solute and others are not); recrystallisation (normally to remove impurities).

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โˆ™ 2010-01-22 04:19:55
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Q: How do you separate chemical substances?
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Related questions

Is true or false chemical properties cannot be used to separate substances?

false


Would you separate substances in a mixture using chemical or physical change?

Physical change.


Which term is used to definr substances that participate in chemical reactions?

In a chemical reaction, two or more substances separate into simpler components and then recombine into other substances. The separation into simpler components usually happens in water and the process is called ionization.


A collection of matter made of substances that stay separate and keep their properties is a?

A physical change, and a chemical change.


How are methods used to separate substance in a mixture physical?

The method of evaporation to separate substances in a mixture is purely physical because no chemical reaction occurs.


What is a way in which chemical properties are used?

Chemical properties can be used for building chemical classifications. They can also be useful to identify an unknown substance or to separate or purify it from other substances.


How do substances interact with other substances is known as chemical properties?

Substances interact with other substances by chemical properties


Are foods substances?

Foods, and the ingredients of foods, may be considered substances. However, more precisely, most are combinations of chemical substances. Ordinary salt (sodium chloride) is a pure substance, while pepper contains numerous chemical compounds, each of which can be considered a separate "substance."


What are chemical substances used in chemical reaction?

These substances are called reactants.


How do you separate insoluble substances from a liquid?

Filtration is the process used to separate insoluble substances from a liquid,


If you had a mixture of 2 substances and had your choice of using a physical or chemical change to separate them which would you prefer?

physical change because a mixture means that the 2 substances are not chemically combined so the 2 substances can be easily separated.


What is a combination of two or more substances?

A combination of two substances that do not chemically react can be a mixture or a solution.When two substances combine to form a new substance, it is said that a chemical reaction has occurred. This reaction is a combination reaction, also known as synthesis. The new substance formed may or may not possess the properties of the constituent substances.When the separate substances are elements, a chemical reaction is one that creates chemical bonds, the combined substance being a compound.


Is ability to react with other substances chemical or physical?

This is a chemical reaction. When substances change you can call it chemical.


Is juice an element?

Juices are neither chemical elements not chemical substances. They are complex mixtures of chemical substances.


What chemical substances absorb light?

Many chemical substances absorb light.


If you had a mixture of two substances and had your choice of using a physical change or a chemical change to separate them which would you prefer?

Physical change is preferable because it is easier than chemical method.


What respresents the chemical reaction needed to make a compound?

A variety of different ways to make new substances and they are what makes the world. Compounds Difficult to separate; a chemical reaction is needed.


Why is it important for scientists to know substances chemical properties?

Scientists can use chemical properties to identify certain substances or even separate it. One way to identify a substance is using universal indicator paper. Many scientists use flames instead.


What is it called when two substances combine to form a new substance?

When two substances combine to form a new substance, it is said that a chemical reaction has occurred. This reaction is a combination reaction, also known as synthesis. The new substance formed may or may not possess the properties of the constituent substances.When the separate substances are elements, a chemical reaction is one that creates chemical bonds, the combined substance being a compound.


How do you separate mixtures and compounds?

Mixtures are separated into their components by physical means, without causing a change in chemical composition. Compounds can be decomposed into simpler substances only by chemical means, meaning a chemical reaction (change).


Would you want to use physical changes or chemical changes to separate two substance?

Physical changes are changes that involve boiling, freezing, or dissolving. Chemical changes are changes in which a new substance is formed. When you want to separate substances, you want them to remain the same (as in the same chemical formula). A chemical change would change the to substances, which you don't want. So you would use a physical change because it won't create new substances, but leave you with two separated substances For example, if you want to separate the salt from the water in salt water, you would boil the water until it all evaporated as steam (leaving all the salt behind). This separation was caused by boiling (characteristic of physical change) the water.


During a chemical reaction substances are?

During a chemical reaction the initial substances (reactants) are transformed in the final substances (products).


What substances do you have at the beginning of a chemical reaction?

The substances you have at the beginning of a chemical reaction are the reactants or the reagents.


What does mixture mean in a scientific term?

A mixture is what you get when you combine two substances in such a way that no chemical reaction occurs between the components and you can separate them again.


What is the list of chemical substances?

Simple: a list of chemical substances ! But now are known more than 60.106 chemical compounds.