Search our library of Chemistry A Level questions

Top answers

Chemistry

A Level

How do anti-bumping granules work?

Anti-bumping granules prevent explosive boiling, as they provide a large surface area for bubbles to form on.

Answered by • Chemistry tutor

23748 Views

Suggest why the concentration of sodium hydroxide in a solution slowly decreases when left open to air

NaOH reacts with carbon dioxide in open air

Answered by Adam K. • Chemistry tutor

4018 Views

Why dose sodium oxide have a high melting point?

Sodium oxide has a formula of Na₂O. Since sodium is a metal and oxygen is a non metal, sodium oxide is an ionic species. Sodium will lose an electron to form a cation and oxygen will gain 2 ele...

Answered by • Chemistry tutor

21137 Views

Explain how a buffer solution resists the pH change when an acid or alkali is added.

HA <----> H+ + OH-Acid:Adding an acid increases the concentration of H+ ions as acids are proton donors. These H+ ions react with the conjugate base, A-, to form HA and thus shift the equilibrium po...

Answered by Alexander F. • Chemistry tutor

7824 Views

What happens during the electrolysis of a molten ionic substance?

A molten ionic substance consists of the ions that make up an ionic compound. During electrolysis these ions, which are contained in the electrolyte solution, are separated through attraction to the two s...

Answered by Jeevan K. • Chemistry tutor

5373 Views