Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
24th January 2024
- 1The Periodic Table: Groups and Trends
Explain why potassium is more reactive than sodium.
- 2Bonding, Structure and Properties of Matter
State one reason why simple covalent substances such as chlorine have low melting points.
- 3Chemical Bonding: Ionic, Covalent and Metallic
Why can metals conduct electricity when solid?
- 4Structures, Properties and Nanoparticles
Why do polymers have higher melting points than small molecules such as methane?
- 5Quantitative Chemistry
A sealed flask containing 12.0 g of reactants is shaken and a reaction occurs. What is the total mass afterwards?
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