Lesson 1 & 2: Qualitative and Quantitative Analysis & the Mole

Qualitative analysis is the process of identifying substances present in a sample; no measurements are involved

Quantitative analysis is the process of measuring the quantity of a substance in a sample; providing numerical data

A mole is a unit of amount; the amount of substance consisting of 6.02 x 10^23 entities

The unit symbol is the mol

Entities - general term used to refer to particles of matter. It can refer to atoms, ions, molecules, formula units or even cupcakes

Avogadro’s Number (NA) is the number of entities in 1 mol of a substance

6.02 x 10^23

The amount (n) is the quantity of a substance, measured in moles. It can be thought of as the number of moles present in a sample

Scientific Notation is way to express really, really, really big numbers or really, really, really small numbers.

It is comprised of the product of a coefficient between 1 and 10 (can be equal to 1 but cannot be equal to 10) multiplied by a power of 10 \n

Multiplying using SN

Multiply the coefficients by one another and multiple the powers together \n (with the same base - keep the base the same and add the exponents)

Make sure to keep it in SN move DP

Dividing Using SN

Divide the coefficients by one another and divide the powers together \n (with the same base - keep the base the same and subtract the exponents)

Make sure to keep it in SN move DP