This program covers the important topic of units and unit conversions in chemistry. We begin by discussing the primary units that will be used throughout the course. Next, we illustrate a very powerful technique to convert from one unit...

Exam tip: one mark in the HSC Physics exam may come from using the correct units. So, if you write and use SI units in all calculations (a pretty simple task), you’ll get a free mark! If only the rest of the exam was that easy! This...

Exam tip: always show units when performing calculations, because missing units might be penalized by the markscheme! This lesson will continue our crash course on units, focusing on SI prefixes and simple unit...

If you're American, you're familiar with the Fahrenheit scale, so 30 degrees is cold and 100 degrees is hot. But in the rest of the world, nobody uses this scale! They use Celsius, and to them, 30 is pretty darn hot. Furthermore,...

Introduction to SI (Système international d'unités or Metric Units) and English (or Imperial) units. Dimensions are your Friend.

The metric system is an internationally agreed upon convention for measuring distance, time, volume, and other quantifiable measurements. Learn about the benefits of the metric system and the importance of a universally recognized system...