IGCSE Chemistry : Principles of chemistry

Experiment to investigate dilution?

Experiment to investigate diffusion?

What is an atom and a molecule?

What is filtration?

What is distillation?

What is fractional distillation?

What is an isotope?

What is a mole?

Describe the formation of ions by the gain or loss of electrons?

What is the name given to loosing electrons, and name given to gaining electrons.

What is ionic bonding?

Key features of an ionic compound?

Difference between ionic charge and melting point and boiling point in ionic compound?

What is an ionic crystal?

What is a covalent bond?

Key features of a covalent bond?

Problem with a simple molecule?

Why do substances with simple molecular structures have low melting and boiling points.

Explain the high melting and boiling points of substances with giant covalent structures.

How the uses of diamond and graphite depend on their structures.

A metal as a giant structure?

What makes a metal conductive and malleable?

Why don't covalent compounds conduct electricity?

Why do ionic compounds conduct electricity only when molten or in solution?

Understand that electrolysis involves the formation of new substances.