GENCHEM : Separation of Mixtures

simple mesh

for instance, this tool can be used in filtration to separatae out large stone components of soil from finer ones.

mixture

they consist of two or more substances in variable amounts that are combined by a physical process.

true

when the usbstances in the mixture are not bonded together chemically, the substances retain their respective chemical identities.

homogeneous or hetereogeneous

mixtures are classified as what?

homogeneous mixture

this is also called a solution.

homogeneous mixture

they have a uniform composition and appearance. an example of this is the air we breathe.

heterogeneous mixture

these are substances that are not distributed uniformly. in some cases, we could easily tell apart the substances making up the mixture.

evaporation

this is a simple technique used to separate a dissolved solid component from the liquid component in a homo mixture.

evaporation

this is a separation technique that involves applying heat to the mixture to evaporate the liquid.

evaporating basin

in the technique of evaporation, what equipment is used aside from the heat and solution needed?

filtration

this is a separating method where particles making up the substances in a mixture are separated by their size

distillation

when there are two or more liquids with different boiling points, we can use this to separate them

distillation

in this method, the liquid component with th elowest boiling point vaporizes first and the vapor passes through a cool tube where it condenses.

paper chromatography

this is the separation technique of choice when we have a mixture consisting of colored substances, such as dyes and inks

paper chromatography

usually, in this method the mixutre is dissolved in a solvent (usually water or alcohol) and the components of the mixture separate out when they travel at different rates.

homo

this is the root word for the term homogeneous which means the same.

hetero

this is the rootword for the term heterogeneous which means different

kinetic energy

what increases when you swirl the salt solution in order to dissolve it more?

residue

this is the term for the remaining product on the filter

filtrate

this is what you call on the filtered out product.

true

in mixtures, substances are combined in variable amounts thru a physical process. true or false?

true

pure substances, such as compounds, are bonded chemically in fixed ratios.