docx, 75.28 KB
docx, 75.28 KB
pdf, 105.3 KB
pdf, 105.3 KB
docx, 73.06 KB
docx, 73.06 KB
pdf, 94.58 KB
pdf, 94.58 KB

A complete, ready-to-teach lesson for Unit 1 (Principles and Applications of Science I), chemistry section: electron affinity, atomic radius and ionic radius across periods and groups.

Learning objectives:

  • Define first and second electron affinity and write equations for them.
  • Explain why first electron affinities are exothermic and second electron affinities are endothermic.
  • Explain the trends in atomic radius across a period and down a group.
  • Compare the radii of atoms and their ions across period 3.

What’s included:

  • Student worksheet (PDF and editable Word)
  • Teacher version with model answers and mark schemes (PDF and editable Word)
  • Teacher notes: lesson flow, common misconceptions and practical/safety notes
  • Retrieval starter (5 marks)
  • Structured tasks with key-idea boxes and clear diagrams
  • Check for Understanding quiz (10 marks) with a confidence self-assessment
  • Exam-style practice (15 marks), ending with a levels-marked 6-mark question with indicative content

Specification coverage:

  • A1 · Periodicity: electron affinity and its trends.
  • A1 · Periodicity: atomic radius and ionic radius trends.

About 60 minutes of teaching; the exam-style section works in class or as homework. All questions are original.

Written for the Pearson BTEC Level 3 Nationals in Applied Science. Not endorsed by Pearson. Single-school licence.

Get this resource as part of a bundle and save up to 47%

A bundle is a package of resources grouped together to teach a particular topic, or a series of lessons, in one place.

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BTEC Applied Science Unit 1 Chemistry Bundle | 20 Complete Lessons

Every paid chemistry lesson for BTEC Level 3 Applied Science Unit 1 (Principles and Applications of Science I) in one download: 20 complete, ready-to-teach lessons, saving almost half compared with buying them individually. **Lessons included:** - A01 Bohr theory and electron shells - A02 Orbitals and the Aufbau principle - A03 Periodic table blocks and electron configuration - A04 Forming ions and ionic bonding - A05 Ionic bond strength - A06 Covalent bonding: dot and cross, dative bonds - A07 Bond length, bond strength and tetrahedral carbon - A08 Metallic bonding - A09 Properties of metals and alloys - A10 van der Waals and dipole-dipole forces - A11 Hydrogen bonding - A12 Balanced equations, Ar and Mr - A14 Reacting quantities and percentage yield - A15 Ionisation energy trends - A16 Electron affinity, atomic and ionic radius - A17 Electronegativity and period 3 melting points - A18 Period 2 and 3 elements with oxygen - A19 Metals with water and acids - A20 Redox and transition metal oxidation states - A21 Displacement reactions (A13 Moles and molarity is available free in the shop.) **Every lesson includes:** - Student and teacher versions in PDF and editable Word - Teacher notes with lesson flow, misconceptions and practical/safety notes - Retrieval starter, structured tasks and a Check for Understanding quiz - 15-mark exam-style practice ending with a levels-marked 6-mark question and indicative content Consistent layout across every lesson, so students always know what to expect. All questions are original. Written for the Pearson BTEC Level 3 Nationals in Applied Science. Not endorsed by Pearson. Single-school licence.

£30.00

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