The newest 14 of 14 written questions. Open one to see it on the real paper.
Write the word equation for this reaction.
See it on the paper →Complete the word equation for this reaction.
See it on the paper →Complete the word equation for this reaction.
See it on the paper →State the names of the two products of the reaction.
See it on the paper →Write the word equation for the thermal decomposition of calcium carbonate.
See it on the paper →The mass of calcium oxide made in this reaction is always less than the mass of calcium carbonate used. Suggest why.
See it on the paper →Complete the word equation for the complete combustion of ethanol. ethanol + +
See it on the paper →Complete the word equation for this reaction. + + +
See it on the paper →Complete the word equation for stage 1 of the Contact process.
See it on the paper →What is the formula of calcium phosphate?
See it on the paper →Construct the word equation for the reaction between copper( II ) oxide and carbon. + +
See it on the paper →Use this information to complete the word equation for the thermal decomposition of sodium hydrogencarbonate. sodium hydrogencarbonate
See it on the paper →Complete the word equation for the reaction between calcium carbonate and dilute hydrochloric acid. calcium carbonate + hydrochloric + acid +
See it on the paper →Construct the word equation for the reaction. +
See it on the paper →Very few candidates correctly completed the word equation for the thermal decomposition of calcium carbonate. Some candidates included carbon or oxygen in their equation. Many candidates attempted to write a balanced symbol equation.
— Examiner report, May/June 2023, 0654/33 Q11(b)(i) (Cambridge)
Very few candidates were able explain why the mass was less. Loss of carbon dioxide needed to be mentioned.
— Examiner report, May/June 2023, 0654/33 Q11(b)(ii) (Cambridge)
Some candidates were able to complete the word equation for the complete combustion of ethanol. Some candidates were able to name the other reactant as oxygen.
— Examiner report, February/March 2023, 0654/32 Q8(d) (Cambridge)
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