Daily Practice · GCSE Science

Daily Practice - GCSE Science

13th April 1999

5 questions · GCSE · 584 questions in this band

1
Quantitative Chemistry
Calculate the Mr of calcium carbonate, CaCO3. (Ca = 40, C = 12, O = 16)
2
Moles, Formulae and Equations
Define the limiting reactant.
3
Concentration, Yield and Atom Economy
Why do companies prefer reactions with a high atom economy?
4
Chemical Changes
Write the word equation for the reaction between zinc and hydrochloric acid.
5
Reactivity, Acids and Salts
State what is observed when magnesium ribbon is added to copper sulfate solution.

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 April 1999, including the monthly compilation PDF.