CHS Kinetic Particle Theory

Catholic High School Soc J Cl\em iotry Wor'kshae1 01 - Kinetic Po1rtlcl1 Theory 8J Name: _____________ ____ _ Mtnt : c1a .. : ___ _ Date: _ _____ _ (Al 1. Multlpft;Cholc• QyttUons 110 mork1J Plugs o1 co«on WOOi soaked re$peclivoly In concen1rnted aquoous ammonia (NH,) ond concenlfa1ed hydroelltonc acid (HC/) are "'-led at the s:ime time 1nto tile oi- ondl of a honzonta1 tube as 51-,, In the diagram below. Tho onda of tl\e tube.,., •outed. Allor a ahot1 lapse ol time. a while do!>OS4 ol ammonium chtorlde waa obMMl<I. Al which ono ol lhe poslllons SltoWn. A. B, C or D does tho depOSit form? [Rulatlve motocutar masses: ammonia. 17. 1\ydrogen chlot1de, 36.5] ( O(IM c,ol Mtii,cd ..... ,.odib lc ..O I ll) 2. In wltk:h conve,ston do waler mo4ecutos toso enocgy? A Ice to water 8 Ice to steam C steam to Ice D water lo steam 3. > nd , of ethanol aro mixed. the total volume Is less than 2x cm' This Is because When x cm of water a x cm A B C D some ethanol evaporates water and ethanol react to produce a gas tha1 escapes water motocules Iii Into gaps t>erween ethanol moleculos water and elhanol react to p<oduce a salt which dissolves , ....,_ ... by: ST on 22 Dec 2019 Page I

Sf.!C 3 Chemisttyl'Kinchc Partide Theory 4. A Jar of hydrogen was inverted over a porous pot w,th the water levels ,rntiaUy at X. as shown In the diagram below. hvdrooen bea ker _LILJ.- ~+- - - air oorous 001 - - - water X - Over a period of tlmo , which one of the following series of changes of water level al X would be obse<ved? A falls, then rises and roturns to X 8 rises, then falls ond rotum s to X C falls and remains or a lowor level D rises and remains al a higher level 5. Which of the foltowlng decreases as a solid is heated 10 oocomo a hQuld? A e C D size of the particles rnoNon of tho particles space between the particles attractive fore.es between the particles ..,~.,.,,.. h-r. ST on 22 OeC 2()19 I L I I) Page Z

:,:>c J r.rw::mistry/K,ncoc ParticJ~ f hcoty 6. Nitrogen dio ido Is x - a dark brown g.as and 1s more dense than au. ·A gas jar contarnlng nitrogen d Xld a,r 10 e 1s sealed wrth a gtas.s plate and 1s lht:n 1m erted on top of a gas jar r:onta!ning nlllOgen dioxide air The glass ptoto Is removed . Which 011(1 of the fOllowlng correclly describes the colours Inside tne gas jars alter a long period of time? [Taken from 5070/08/Jun/O3) ~ uppe r gas Ja.r lower 11•• Jar A brown brown B dnrk brown lighl b<own C colourless dark brown D fight brown dark brown . t i 7. The diagram s show the par1ides In a subslance al IW0 d1ffe<en11ompera1u1es bul al the same pressuro . Olau,lmA o0 og9co oo~o 0 oO 0o 0o ooo O 000 00 0 000 g~cgo~ 0 °o~g -90"C [)uplllll 8 0 0 0 0 - S"C Which of the following most likely lndicales the melting poin t and boiling point of the substance? Metting point/ •c Bolllng point/ •c A -183 -162 B -82 -60 C -102 .34 0 -76 -10 l ( I Last updaled by: ST on 22 Oec20t9 Page J

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