IA Topic 1: Analytical Process & Sampling

What is qualitative analysis?

• presence of substance

• amount of substance

What is quantitative analysis?

• presence of substance

• amount of substance

How many stages are there in analytical process?

• 5

• 6

• 7

• 8

What is the first step of analytical process?

• obtaining the sample

• presenting and evaluating the results

• define the problem

• sample preparation

What is the second step of analytical process?

• define the problem

• obtaining the sample

• selecting analytical method

• sample preparation

What is the third step of analytical process?

• obtaining the sample

• performing quantitative and qualitative analysis

• selecting analytical method

• sample preparation

What is the fourth step of analytical process?

• selecting analytical method

• sample preparation

• performing quantitative and qualitative analysis

• presenting and evaluating

What is the fifth step of analytical process?

• sample preparation

• performing quantitative and qualitative analysis

• selecting analytical method

• presenting and evaluating

What are the 2 types of samples?

Answer explanation

Homogenous

Heterogenous

Homogenous samples ...

• are uniform in appearance

• have uniform chemical composition throughout

• different substances or phases

• have different chemical composition