Nikki F.

Recent Posts

Puzzling out ionic compounds

Posted by Nikki F. on 1/15/21 12:30 PM

Although there are lots of tricks that people use to write chemical formulas for ionic compounds, the best way to do it is to really understand what’s going on – that way, you’ll never use a shortcut that doesn’t work.

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Tags: chemistry, chemistry SAT subject test

A step-by-step approach to dimensional analysis

Posted by Nikki F. on 1/13/21 4:00 PM

Dimensional analysis is the best way to do math in chemistry. With dimensional analysis, you don’t need to memorize formulas, and you can easily check your work for every problem. Because this skill is so important, it’s crucial to have a step-by-step method that you follow every time you do it.

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Tags: chemistry, chemistry SAT subject test

Using pKa to predict protonation state

Posted by Nikki F. on 1/11/21 1:48 PM

When you’ve learned about pKa previously, you’ve probably used it in acid-base calculations. However, some exams may ask you to apply a conceptual knowledge of pKa to predict whether a chemical compound is charged or uncharged.

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Tags: chemistry, chemistry SAT subject test

S’more fun: simplifying limiting reactants using chocolate

Posted by Nikki F. on 11/2/20 9:54 AM

Stoichiometry: it’s the bane of many chemistry students’ studies. It’s so easy to get tangled up in a jumble of numbers without any idea of what’s actually going on.

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Tags: chemistry