Reactions of alkenes and alcohols (chemistry only) exam tips

Exam tips

• Remember the ‘water loss’ cue

  Remember to when you see a reaction between two monomers that each have a functional group capable of reacting, think of a condensation polymerisation – the reaction will produce a polymer and a small molecule such as water. Link the answer to Polymerisation and naturally occurring polymers, keep the formula or organic family precise, and avoid mixing alkanes, alkenes, cracking, combustion, monomers, and polymers.

  Condensation polymerisation is defined by the loss of a small molecule; recalling this cue helps students identify the reaction type and predict the by‑product, which is essential for answering questions about polymer formation. This keeps revision aligned with the approved learning objective on when these monomers react they join together, usually losing small molecules such as water, so the reactions are called condensation reactions.

• Understand Monomer Functionality

  Remember to when studying polymers, focus on the functional groups of the monomers involved in the reaction. Link the answer to Polymerisation and naturally occurring polymers, keep the formula or organic family precise, and avoid mixing alkanes, alkenes, cracking, combustion, monomers, and polymers.

  This helps you understand how different monomers combine to form polymers and the significance of their functional groups in determining the properties of the resulting polymer. This keeps revision aligned with the approved learning objective on the simplest polymers are produced from two different monomers with two of the same functional groups on each monomer.

• Understand Functional Groups

  Remember to familiarize yourself with the functional groups involved in condensation polymerisation, such as –OH and –COOH, as they determine the properties of the resulting polymers. Link the answer to Polymerisation and naturally occurring polymers, keep the formula or organic family precise, and avoid mixing alkanes, alkenes, cracking, combustion, monomers, and polymers.

  Understanding functional groups helps you predict how monomers will react and what types of polymers will form, which is crucial for explaining condensation polymerisation. This keeps revision aligned with the approved learning objective on explain the basic principles of condensation polymerisation by reference to the functional groups in the monomers and the repeating units in the polymers. (HT only).

• Understand Amino Acid Structure

  Remember to memorize the structure of amino acids, focusing on the two functional groups they contain. Link the answer to Polymerisation and naturally occurring polymers, keep the formula or organic family precise, and avoid mixing alkanes, alkenes, cracking, combustion, monomers, and polymers.

  This knowledge is crucial for understanding how amino acids polymerize to form proteins, which is a key concept in organic chemistry. This keeps revision aligned with the approved learning objective on amino acids have two different functional groups in a molecule.

• Understand Condensation Polymerisation

  Remember to focus on how amino acids join through condensation polymerisation to form polypeptides, remembering that water is released in the process. Link the answer to Polymerisation and naturally occurring polymers, keep the formula or organic family precise, and avoid mixing alkanes, alkenes, cracking, combustion, monomers, and polymers.

  This understanding is crucial for explaining the formation of proteins and the role of functional groups in the reaction. This keeps revision aligned with the approved learning objective on amino acids react by condensation polymerisation to produce polypeptides. (HT only).

• Understand Glycine Polymerisation

  Focus on the process of glycine polymerising to form polypeptides. Be able to explain the role of functional groups in this reaction.

  This understanding is crucial for answering questions about protein synthesis and the significance of amino acids in biological processes.

• Understand Amino Acid Structure

  Familiarize yourself with the structure of amino acids and how they link together to form proteins.

  This helps you visualize the process of protein synthesis and understand how different sequences of amino acids lead to different proteins.

• Understand DNA's Role

  Remember to remember that DNA is essential for life and encodes genetic instructions. Link the answer to Polymerisation and naturally occurring polymers, keep the formula or organic family precise, and avoid mixing alkanes, alkenes, cracking, combustion, monomers, and polymers.

  This understanding helps you connect the importance of DNA to biological processes and the diversity of life. This keeps revision aligned with the approved learning objective on dNA is a large molecule essential for life.

• Understand DNA's Role

  Remember to focus on how DNA encodes genetic instructions and its importance in the development and functioning of living organisms. Link the answer to Polymerisation and naturally occurring polymers, keep the formula or organic family precise, and avoid mixing alkanes, alkenes, cracking, combustion, monomers, and polymers.

  This understanding is crucial for explaining the biological significance of DNA and its role in heredity and evolution. This keeps revision aligned with the approved learning objective on dNA encodes genetic instructions for the development and functioning of living organisms and viruses.

• Understand DNA Structure

  Remember to visualize the double helix structure of DNA and the arrangement of nucleotides. Link the answer to Polymerisation and naturally occurring polymers, keep the formula or organic family precise, and avoid mixing alkanes, alkenes, cracking, combustion, monomers, and polymers.

  This helps in understanding how nucleotides form the genetic code and the significance of their sequence in encoding genetic information. This keeps revision aligned with the approved learning objective on most DNA molecules are two polymer chains, made from four different monomers called nucleotides, in the form of a double helix.