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Examen
AQA GCSE CHEMISTRY PAPER 1 EXAM. QUESTIONS WITH 100% CORRECT ANSWERS.
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---52agosto 20252025/2026A
- Why must the anode be replaced regularly? 
The anode must be replaced regularly because the oxygen produced at the anode reacts with the carbon in the graphite forming carbon dioxide gas 
 
 
What are exothermic reactions? 
Exothermic reactions are reactions that transfer energy to their surroundings 
 
 
What happens to the temperature of the surroundings in an exothermic reaction? 
In an exothermic reaction the temperature of the surroundings gets increases 
 
 
Give three examples of exotherm...
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$13.49 Más información
jhaque
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Examen
AQA CHEMISTRY PAPER 1 EXAM. QUESTIONS WITH 100% CORRECT ANSWERS.
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--11julio 20252024/2025ADisponible en un paquete
- Carbon 
Element which is more reactive than many metals and so can be used to extract them from their ores 
 
 
Sodium hydroxide + sulfuric acid --> 
Sodium sulfate + water 
 
 
Sodium carbonate + nitric acid 
Sodium nitrate + water + carbon dioxide 
 
 
Substances have high melting points because.. 
There are strong bonds between their particles 
 
 
Substances DO conduct electricity if... 
they contain free moving electrons or ions 
 
 
Metals are malleable and ductile AND graphite is soft ...
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$8.99 Más información
jhaque