Study notes for 'Matter in our Surrounding', Study notes of Chemistry

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CHARACTERISTICS^ OF^ PARTICLES^ OF^ MATTER

1). The particles of matter have.space between them.

2). The particles of matter are continuously moving.

3). The particles of matter attract each other.

CAN MATTER CHANGE ITS STATE? We can change the states of matter.

Water Steam

Kinetic Energy of particles increases due to increase in temperature. Melting point Melting (Fusion) rnrul(:fj.1 cdlcl(,,,N:1ffhm~lhml ~ ~mr4l'Jtrm(]Ebntblamiw;,@r;rn1l1JIID,

Boiling Point ~~ll!JDEOMttt,iJfi1[!ta!flil~,,t~Filli,t•UJflI::I1titQ1i4i3^1 1Glt1CJ,1,WJ11fil:)filtflJJ:ig[;Eiha Boiling(Vaporisation) 'filEUl(•I5ff}jlt)Mttt,i]mllta!ftl)n'--IJ-~•-Hi-~~~-fhf!J,1,WJ,1fm~tID•11h

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Latent Heat of Vaporisation 'iilBWD.0!1, Or.tlJ[i!E}@Wl67lG:)! oanwc,n t •I, E!P~l?ID~Hi!m ~cm, it• ~l]JJ.W.!!tb cmtID ~t;Effmlh/3it•1W 1 1~/10'N 1 0t:lm0~

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In which state water exits at 100°C?

At I00 °C^ water exists^ in liquid^ and^ gaseous state.

EFFECT OF CHANGE OF TEMPERATURE Sublimation 'I}. ctiange of state^ cHrectlY.^ fr^ om^ solicl^ to^ gas^ or,^ gas^ to^ solicl^ without changing intoIi uid^ s^ ate^ is^ callecl su 61imation. ~ ILIQUID I ~

EFFECT OF CHANGE OF PRESSURE DRVICE - Solid Carbon Dioxide SolidCO 2 is stored under high pressure. When pressure reduces it directly becomes gas without changing into liquid.

EVAPORATION The phenomenon of change of liquid into vapour at any temperature is known as Evaporation. Evaporation causes cooling Because the particles of liquid absorbs heat energy from surrounding. This absorption of heat makes the surrounding cool.

EVAPORATION fil!rlChJ[iEID0ilffif.tt, Iifmrnlti I aim~'.'ti ulliU.M r trn~Gnof t, rrnM.;M f ti t•I,, tof i^1 0-0mJtBWE t rn W•futtJ~arEil!E[!!roi

Why we see drops on the outer surface of bottle containing ice-cold water?

Water vapour is present in the surrounding so when^ vapour^ came^ in contact with^ cold^ surface^ the^ kinetic^ energy^ of vapour particles decreases and they become liquid which can be^ seen^ as^ drops.

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