Topic C8 - Chemical Analysis

Question 1

What is the definition of purity in chemistry

Answer 1

A pure substance is something that only contains one compound or element throughout

Question 2

How can you tell if a substance is pure

Answer 2

Chemically pure substance will melt or boil at a specific temperature

You can test the purity of the sample by measuring its melting or boiling point and comparing it to the melting and boiling point of the pure substance

The closer your measurement value is to the actual melting or boiling point the purer your sample is

Question 3

What is formulation

Answer 3

Are useful mixtures with a precise purpose that are made by following a formula

Question 4

Why is formulation important in the pharmaceutical industry

Answer 4

Chemistscan make sure it delivers the drug to the correct part of the body of the right concentration that it’s consumable and has a long enough shelflife

Question 5

What is the test for chlorine

Answer 5

Damp litmus paper bleaches

Question 6

What is the test for oxygen

Answer 6

A Glowing splint relights

Question 7

What is the test for carbon dioxide

Answer 7

Colourless lime water turnes cloudy

Question 8

What is the test for hydrogen

Answer 8

Squeaky pop test