<body><script type="text/javascript"> function setAttributeOnload(object, attribute, val) { if(window.addEventListener) { window.addEventListener('load', function(){ object[attribute] = val; }, false); } else { window.attachEvent('onload', function(){ object[attribute] = val; }); } } </script> <div id="navbar-iframe-container"></div> <script type="text/javascript" src="https://apis.google.com/js/platform.js"></script> <script type="text/javascript"> gapi.load("gapi.iframes:gapi.iframes.style.bubble", function() { if (gapi.iframes && gapi.iframes.getContext) { gapi.iframes.getContext().openChild({ url: 'https://www.blogger.com/navbar.g?targetBlogID\x3d8438584\x26blogName\x3dhigh+on+endorphine\x26publishMode\x3dPUBLISH_MODE_BLOGSPOT\x26navbarType\x3dTAN\x26layoutType\x3dCLASSIC\x26searchRoot\x3dhttps://off-balance.blogspot.com/search\x26blogLocale\x3den_US\x26v\x3d2\x26homepageUrl\x3dhttp://off-balance.blogspot.com/\x26vt\x3d-4347154133209846630', where: document.getElementById("navbar-iframe-container"), id: "navbar-iframe" }); } }); </script>
off-balance .blogspot.com ♥

Friday, May 12, 2006
PEIXUAN posted at 11:37:00 AM

Wahh! i can't put that pretty web band on my blog.. i dunno why.. sad.
anyway.. it's some kinda anti-racism thing.
EMBRACE DIVERSITY
STOP THE HATE
i can't stand racists either. i think male chuavinists might be racist.

anyway.. chemistry paper 1 is on tuesday!

-all sulphates are soluble except Calcium, Barium, Lead.
-all chlorides are soluble except Lead n Silver.
-all carbonates are INsoluble except Sodium, Potassium, Ammonia.
-all nitrates are soluble.

is salt soluble?
-no: PRECIPITATION - mix solutions of two soluble salts to precipitate insoluble salts.
then... filter off, wash and dry btwn filter papers.

-yes: react with alkali/metal oxide/metal carbonate

is metal oxide/hydroxide/carbonate soluble?
-yes: TITRATION - mix acid and alkali to produce salt
HCl + NaOH --> NaCl + H2O

no: mix acid and excess metal oxide/carbonate
>filter off excess base carbonate, evaporate the filtrate, obtain salt.

-metal + acid = salt + hydrogen
-acid + base = salt + water
-acid + carbonate = salt + water + carbon dioxide

oxidation is...
-gain of oxygen
-loss of hydrogen
-increase in oxidation no.
-loss of electrons
reduction is...
-loss of hydrogen
-gain of hydrogen
-decrease in oxidation no.
-gain of electrons

A MATH is on monday.
i'll consider whether to type the formulaes in.
i think no.

ok..

i'll add in more info later..

love, peixuan.
Protagonist

Bloggers

Previous

Archives

Speak Up

Credits