Daily Practice

GCSE Science

20th August 1992

5 questions · GCSE · 584 questions in this band

1
Moles, Formulae and Equations
Calculate the number of moles in 88 g of carbon dioxide. (Mr = 44)
2
Concentration, Yield and Atom Economy
State two reasons why a percentage yield is less than 100 percent.
3
Chemical Changes
Explain why aluminium cannot be extracted from aluminium oxide by heating with carbon.
4
Reactivity, Acids and Salts
Complete: acid + metal carbonate gives ...
5
Electrolysis
State the name given to the negative electrode in electrolysis.

You are looking at an earlier sheet. Today's sheet is the one that adds a day.

Your run is kept in this browser only, and there is no account.

Any date always gives the same five questions, so a sheet can be set again or shared. All of August 1992, including the monthly compilation PDF.