Admission Foundation Sprint · Day 3 · Retrieve

Retrieve

Momentum and collision; atomic structure; differentiation problems; biomolecules.

Recall firstExplain the whyRepair the error

Today's loop

Learn → recall without notes → solve → submit or check → explain → repair → retest. Use a notebook for working. The page is a guide, not a substitute for a full syllabus or an official question paper.

Four subject capsules

Physics

  • Momentum p = mv is a vector quantity.
  • For an isolated system, total momentum is conserved even when kinetic energy is not.
  • Separate elastic, inelastic and perfectly inelastic descriptions; do not assume kinetic-energy conservation in every collision.

Chemistry

  • Atomic number identifies the element; mass number counts protons plus neutrons.
  • Isotopes have the same atomic number but different neutron numbers.
  • Electron arrangement helps explain periodic behaviour, but a shell diagram must follow the stated model and its limits.

Higher Mathematics

  • Differentiate before substituting a numerical point when finding a tangent slope.
  • Use implicit differentiation when y is mixed with x.
  • Check a derivative by dimensions, sign or a simple numerical estimate.

Biology

  • Carbohydrates commonly serve as immediate energy sources or structural materials.
  • Lipids are hydrophobic and include energy-storage and membrane components.
  • Proteins are polymers of amino acids; their function depends on sequence and three-dimensional structure.

Recall without notes

  1. Why can momentum be conserved when kinetic energy is not?
  2. Define isotope without using the word mass alone.
  3. Find dy/dx for x² + y² = 25.
  4. Compare carbohydrate, lipid and protein by building block and one function.

Practice and application

  1. Solve one recoil or collision problem and label the system boundary.
  2. Write isotope notation for three atoms and count subatomic particles.
  3. Complete 10 differentiation problems, including one implicit relation.
  4. Make biomolecule flashcards with building block, bond and function.

Assessment / output

Written retrieval plus flashcards; 20 concise answers in the error log or notebook.

Biology return-to-source links

HSC Botany · Genetics course