What is a mole in chemistry GCSE? Chemists measure the amount of a substance in a unit called 'the mole'. ... It allows chemists to make predictions about the masses of different substances that are involved in reactions. One mole isthe Avogadro number of particles (atoms, molecules , ion...
The median is one of three ways we can find the center of a group of numbers. We call this finding the center 'measuring central tendency.' Mean, median, and mode are the three most popular ways to do this. You can think of the median as the middleman of a group of numbers. It'...