Principles of chemistry Flashcards Preview

Chemistry > Principles of chemistry > Flashcards

Flashcards in Principles of chemistry Deck (5)

What is diffusion?

Diffusion is the ,pavement of a substance from an area of high concentration to low concentration


What precipitate forms when ammonia gas interacts with hcl?

Ammonium chloride


Why might you use fractional distillation instead of simple distillation?

Simple requires substances with large boiling point differences


What is produced when a metal reacts with water?

Metal hydroxide and hydrogen


What are the two ways to prevent rusting?

1. Barrier method-keep out water and oxygen
2. Sacrificial method-use a more reactive metal to be oxidised