Chemical Analysis

Question 1

Pure substances and mixtures:

Answer 1

Pure substance: compound or element, but only contain one substance.

The melting and boiling point of an element or a compound are called fixed points.

Question 2

Testing for gas:

Answer 2

Hydrogen gas burns rapidly with a ‘POP’ when you apply a light splint.

Oxygen had delights a glowing splint

Carbon dioxide turns limewater milky ( cloudy)

Chloride has bleaches damp blue litmus paper white.