Principles of chemistry Flashcards Preview

Chemistry > Principles of chemistry > Flashcards

Flashcards in Principles of chemistry Deck (5)
1

What is diffusion?

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

2

What precipitate forms when ammonia gas interacts with hcl?

Ammonium chloride

3

Why might you use fractional distillation instead of simple distillation?

Simple requires substances with large boiling point differences

4

What is produced when a metal reacts with water?

Metal hydroxide and hydrogen

5

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