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How to Smell The Chemical

Substance??

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Smell The Chemical Substance

Proper way to smell achemical is to waft your handabove the container towardsyour face.

Never smell or sniff achemical straight on with yournose... hazardous chemicalscan burn your nose andlungs.

So just waft the air uptowards your face to smell achemical.

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Cont..

Test-tubes should be heldabout 30 cm from theface, level with the nosebut pointing away. Thevapour can then be gentlywafted towards the nosewith the other hand.

Alternatively, a deepbreath can be taken and

then attempts made tosmell the gas. Only a littlegas is inhaled but thesmell can be detected.

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How to Filter TheSolution???

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The Equipment that is Needed to

Filter The Chemical Substance

Filter Paper

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Filter The Chemical Substance

Practiciant must choose thekinds of filter paper that issimilar to the size ofsediment that will be filtered

Filter paper is folded so we

can get two areas that aresimilar in size andpracticiant fold again untilget gadruple area

After that , practiciant mustcut the under part of paper

to give inspiration of air so,the filter proccess can beoccurred fastly

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. Filtering Filtering is used to separate small solid particles from a liquid

Example: Separating dirt from water by filtering

The dirty water is poured through a piece of filter paper.

Water particles pass through the tiny holes in the filter paper. The particles of dirt, which are larger than the particles of water, get

stuck in the holes and do not get through.

When the process is finished the dirt is trapped in the filter paper andthe clear water has dripped through into the beaker below.

Any liquid that has been filtered is known as a filtrate Using filter paper to remove dirt from water

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Email this pagePrint this pageFilter Paper

Go back to: Laboratory Supplies Quantity in Basket:none

Product Code: 1301Price: $0.00Shipping Weight: 0.30 poundsSize: 9.0 cm 11.0 cm Quantity: Pure white,

smooth-finish paper, uniform in texture. Highretentivity for filtering operations other thangravimetric analysis. Most widely used for generallaboratory filtration and qualitative analysis. 100circles of filter paper. Diameter 9.0 cm - $4.40Diameter 11.0 cm - $6.80

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Filtration can remove suspended material from wateras long as the pores in the filter paper are smallerthan the particles of the suspended substance.

Filtration is done by passing a mixture through afilter. The residue is the substance that remains onthe filter paper. The filtrate is the substance thatflows through the filter paper.

Check out these sites to learn more about thevarious types of filtration!

site one

site two

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Folding Filter Paper A technique for folding filterpaper for a simple gravity filtration is demonstrated.

Discussion T

his simple technique is usually appropriate whenfiltering at room temperature. In a hot filtration,another folding method, fluting is recommended.

It is important to use the correct size filter paper.Properly sized filter paper should stop just below therim of the glass funnel. As a guide, use filter paper

whose diameter is about 1 cm less than twice thediameter of the funnel, for example a six-centimeterdiameter funnel uses a filter paper of eleven-centimeter diameter.

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Narrative

Simple or regular folding is done by firstfolding in half, then in quarters, then teara small corner off one quarter, and openthe paper this way. The tear allows aircontact between the paper and the

funnel.

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General Description:

Wafting is a way of "smelling" a chemical in the laboratory.Because the fumes could be hazardous wafting is a wayof smelling the chemical while preventing accidents. It

ensures that you don't inhale "pure" vapors. Method:

Instead of placing your face directly over the chemical,stand at an angle, about six inches away from thechemical. Then while continuing to breathe normally, withnumerous swooping motions of the hand, bring the odor

of the chemical toward your face. By using this method ofsmelling chemicals you should reduce the risk of itburning your nose and face.