<p>Does any one have any pnemonic devices for some of the more memorization-y aspects of the test? I have trouble remembering the steps to find the heat need to change a given quantity of ice to steam as well as the names and configurations of the different chemical molecules you need to idenitify (trigonal planar, bent x2, seesaw, etc). Help in those areas (and any others for that matter) would be greatly appreciated!</p>
<p>OIL RIG: Oxidation is Loss, Reduction is Gain
AN OX ate a RED CAT: Oxidation at anode, reduction at cathode</p>
<p>For the shapes, you just kinda have to know it. Columns 1A,2A, 7A form linear shapes. 3A is trigonal planar, 4A is tetrahedral, 5A is trigonal pyrimidal, 6A is bent. </p>
<p>For phase changes just know the phase change equations (1.) Q=m<em>L and (2.) Q=m</em>c*DT. I’m not completely sure but I would just reason it through: (Using water as an example) Apply 2 first and use 0 C as the melting pt, then apply 1 for phase change, then apply 2 and use 100 C as boiling point, then apply 1 for phase change. L is the latent heat of fusion (for solid to liquid) or vaporization (for liq to gas) and m is mass.</p>
<p>Edit: And don’t forget to add all the Qs together at the end…</p>