Exam style questions: Additional science- Chemistry

Q. A balance used for an experiment has a high resolution. Explain why. 

- The balance needs to measure small changes in mass

Q. How does the surface area affect the rate of reaction? (2 marks)

- An increase in surface area will  increase in the rate of reaction due to more collisions between particles.

Q. Aluminium is made by the electrolysis of aluminium oxide. Explain, as fully…