Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
1st December 2021
- 1Organic Chemistry
Hexadecane (C16H34) is cracked to produce dodecane (C12H26) and one other product. Calculate the molecular formula of the other product.
- 2Alkanes, Alkenes and Crude Oil
Name the alkene with the molecular formula C4H8.
- 3Alcohols, Carboxylic Acids and Polymers
Name the type of biological molecule formed when amino acid monomers join together by condensation polymerisation.
- 4Chemical Analysis
State the reagent added, and the result, that shows a white solid contains sulfate ions.
- 5Tests for Ions, Gases and Flame Tests
Explain how the sodium hydroxide test distinguishes aluminium ions from calcium ions, given that both give a white precipitate.
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