Daily Practice
GCSE Science
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19th April 1990
- 1Atomic Structure and the History of the Atom
Why is an atom electrically neutral?
- 2The Periodic Table: Groups and Trends
Why are the noble gases unreactive?
- 3Bonding, Structure and Properties of Matter
State the charge on a calcium ion (Group 2).
- 4Chemical Bonding: Ionic, Covalent and Metallic
Why can an ionic compound conduct electricity when molten or dissolved but not when solid?
- 5Structures, Properties and Nanoparticles
Why is graphite soft and slippery?
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Any date always gives the same five questions, so a sheet can be set again or shared. All of April 1990, including the monthly compilation PDF.